c9244bdac1
Bug: 7229520 Change-Id: Ie878e0c13fdcda7b9131fa56208b84ed88125be7
639 lines
17 KiB
C++
639 lines
17 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <math.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <locale.h>
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#include "TemporaryFile.h"
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TEST(stdio, tmpfile_fileno_fprintf_rewind_fgets) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != NULL);
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int fd = fileno(fp);
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ASSERT_NE(fd, -1);
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struct stat sb;
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int rc = fstat(fd, &sb);
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ASSERT_NE(rc, -1);
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ASSERT_EQ(sb.st_mode & 0777, 0600U);
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rc = fprintf(fp, "hello\n");
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ASSERT_EQ(rc, 6);
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rewind(fp);
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char buf[16];
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char* s = fgets(buf, sizeof(buf), fp);
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ASSERT_TRUE(s != NULL);
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ASSERT_STREQ("hello\n", s);
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fclose(fp);
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}
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TEST(stdio, getdelim) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != NULL);
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const char* line_written = "This is a test";
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int rc = fprintf(fp, "%s", line_written);
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ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
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rewind(fp);
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char* word_read = NULL;
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size_t allocated_length = 0;
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const char* expected[] = { "This ", " ", "is ", "a ", "test" };
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for (size_t i = 0; i < 5; ++i) {
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ASSERT_FALSE(feof(fp));
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ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), static_cast<int>(strlen(expected[i])));
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ASSERT_GE(allocated_length, strlen(expected[i]));
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ASSERT_STREQ(word_read, expected[i]);
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}
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// The last read should have set the end-of-file indicator for the stream.
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ASSERT_TRUE(feof(fp));
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clearerr(fp);
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// getdelim returns -1 but doesn't set errno if we're already at EOF.
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// It should set the end-of-file indicator for the stream, though.
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errno = 0;
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ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), -1);
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ASSERT_EQ(0, errno);
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ASSERT_TRUE(feof(fp));
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free(word_read);
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fclose(fp);
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}
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TEST(stdio, getdelim_invalid) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != NULL);
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char* buffer = NULL;
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size_t buffer_length = 0;
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// The first argument can't be NULL.
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errno = 0;
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ASSERT_EQ(getdelim(NULL, &buffer_length, ' ', fp), -1);
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ASSERT_EQ(EINVAL, errno);
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// The second argument can't be NULL.
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errno = 0;
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ASSERT_EQ(getdelim(&buffer, NULL, ' ', fp), -1);
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ASSERT_EQ(EINVAL, errno);
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// The underlying fd can't be closed.
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ASSERT_EQ(0, close(fileno(fp)));
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errno = 0;
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ASSERT_EQ(getdelim(&buffer, &buffer_length, ' ', fp), -1);
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ASSERT_EQ(EBADF, errno);
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fclose(fp);
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}
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TEST(stdio, getline) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != NULL);
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const char* line_written = "This is a test for getline\n";
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const size_t line_count = 5;
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for (size_t i = 0; i < line_count; ++i) {
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int rc = fprintf(fp, "%s", line_written);
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ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
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}
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rewind(fp);
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char* line_read = NULL;
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size_t allocated_length = 0;
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size_t read_line_count = 0;
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ssize_t read_char_count;
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while ((read_char_count = getline(&line_read, &allocated_length, fp)) != -1) {
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ASSERT_EQ(read_char_count, static_cast<int>(strlen(line_written)));
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ASSERT_GE(allocated_length, strlen(line_written));
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ASSERT_STREQ(line_read, line_written);
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++read_line_count;
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}
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ASSERT_EQ(read_line_count, line_count);
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// The last read should have set the end-of-file indicator for the stream.
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ASSERT_TRUE(feof(fp));
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clearerr(fp);
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// getline returns -1 but doesn't set errno if we're already at EOF.
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// It should set the end-of-file indicator for the stream, though.
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errno = 0;
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ASSERT_EQ(getline(&line_read, &allocated_length, fp), -1);
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ASSERT_EQ(0, errno);
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ASSERT_TRUE(feof(fp));
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free(line_read);
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fclose(fp);
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}
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TEST(stdio, getline_invalid) {
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FILE* fp = tmpfile();
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ASSERT_TRUE(fp != NULL);
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char* buffer = NULL;
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size_t buffer_length = 0;
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// The first argument can't be NULL.
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errno = 0;
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ASSERT_EQ(getline(NULL, &buffer_length, fp), -1);
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ASSERT_EQ(EINVAL, errno);
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// The second argument can't be NULL.
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errno = 0;
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ASSERT_EQ(getline(&buffer, NULL, fp), -1);
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ASSERT_EQ(EINVAL, errno);
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// The underlying fd can't be closed.
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ASSERT_EQ(0, close(fileno(fp)));
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errno = 0;
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ASSERT_EQ(getline(&buffer, &buffer_length, fp), -1);
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ASSERT_EQ(EBADF, errno);
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fclose(fp);
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}
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TEST(stdio, printf_ssize_t) {
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// http://b/8253769
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ASSERT_EQ(sizeof(ssize_t), sizeof(long int));
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ASSERT_EQ(sizeof(ssize_t), sizeof(size_t));
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// For our 32-bit ABI, we had a ssize_t definition that confuses GCC into saying:
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// error: format '%zd' expects argument of type 'signed size_t',
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// but argument 4 has type 'ssize_t {aka long int}' [-Werror=format]
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ssize_t v = 1;
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char buf[32];
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snprintf(buf, sizeof(buf), "%zd", v);
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}
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// https://code.google.com/p/android/issues/detail?id=64886
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TEST(stdio, snprintf_a) {
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char buf[BUFSIZ];
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EXPECT_EQ(23, snprintf(buf, sizeof(buf), "<%a>", 9990.235));
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EXPECT_STREQ("<0x1.3831e147ae148p+13>", buf);
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}
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TEST(stdio, snprintf_lc) {
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char buf[BUFSIZ];
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wint_t wc = L'a';
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EXPECT_EQ(3, snprintf(buf, sizeof(buf), "<%lc>", wc));
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EXPECT_STREQ("<a>", buf);
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}
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TEST(stdio, snprintf_ls) {
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char buf[BUFSIZ];
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wchar_t* ws = NULL;
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EXPECT_EQ(8, snprintf(buf, sizeof(buf), "<%ls>", ws));
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EXPECT_STREQ("<(null)>", buf);
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wchar_t chars[] = { L'h', L'i', 0 };
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ws = chars;
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EXPECT_EQ(4, snprintf(buf, sizeof(buf), "<%ls>", ws));
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EXPECT_STREQ("<hi>", buf);
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}
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TEST(stdio, snprintf_n) {
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#if defined(__BIONIC__)
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// http://b/14492135
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char buf[32];
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int i = 1234;
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EXPECT_EQ(5, snprintf(buf, sizeof(buf), "a %n b", &i));
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EXPECT_EQ(1234, i);
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EXPECT_STREQ("a n b", buf);
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#else
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GTEST_LOG_(INFO) << "This test does nothing.\n";
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#endif
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}
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TEST(stdio, snprintf_smoke) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "a");
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EXPECT_STREQ("a", buf);
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snprintf(buf, sizeof(buf), "%%");
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EXPECT_STREQ("%", buf);
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snprintf(buf, sizeof(buf), "01234");
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EXPECT_STREQ("01234", buf);
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snprintf(buf, sizeof(buf), "a%sb", "01234");
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EXPECT_STREQ("a01234b", buf);
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char* s = NULL;
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snprintf(buf, sizeof(buf), "a%sb", s);
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EXPECT_STREQ("a(null)b", buf);
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snprintf(buf, sizeof(buf), "aa%scc", "bb");
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EXPECT_STREQ("aabbcc", buf);
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snprintf(buf, sizeof(buf), "a%cc", 'b');
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EXPECT_STREQ("abc", buf);
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snprintf(buf, sizeof(buf), "a%db", 1234);
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EXPECT_STREQ("a1234b", buf);
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snprintf(buf, sizeof(buf), "a%db", -8123);
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EXPECT_STREQ("a-8123b", buf);
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snprintf(buf, sizeof(buf), "a%hdb", static_cast<short>(0x7fff0010));
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EXPECT_STREQ("a16b", buf);
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snprintf(buf, sizeof(buf), "a%hhdb", static_cast<char>(0x7fffff10));
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EXPECT_STREQ("a16b", buf);
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snprintf(buf, sizeof(buf), "a%lldb", 0x1000000000LL);
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EXPECT_STREQ("a68719476736b", buf);
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snprintf(buf, sizeof(buf), "a%ldb", 70000L);
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EXPECT_STREQ("a70000b", buf);
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snprintf(buf, sizeof(buf), "a%pb", reinterpret_cast<void*>(0xb0001234));
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EXPECT_STREQ("a0xb0001234b", buf);
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snprintf(buf, sizeof(buf), "a%xz", 0x12ab);
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EXPECT_STREQ("a12abz", buf);
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snprintf(buf, sizeof(buf), "a%Xz", 0x12ab);
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EXPECT_STREQ("a12ABz", buf);
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snprintf(buf, sizeof(buf), "a%08xz", 0x123456);
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EXPECT_STREQ("a00123456z", buf);
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snprintf(buf, sizeof(buf), "a%5dz", 1234);
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EXPECT_STREQ("a 1234z", buf);
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snprintf(buf, sizeof(buf), "a%05dz", 1234);
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EXPECT_STREQ("a01234z", buf);
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snprintf(buf, sizeof(buf), "a%8dz", 1234);
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EXPECT_STREQ("a 1234z", buf);
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snprintf(buf, sizeof(buf), "a%-8dz", 1234);
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EXPECT_STREQ("a1234 z", buf);
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snprintf(buf, sizeof(buf), "A%-11sZ", "abcdef");
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EXPECT_STREQ("Aabcdef Z", buf);
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snprintf(buf, sizeof(buf), "A%s:%dZ", "hello", 1234);
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EXPECT_STREQ("Ahello:1234Z", buf);
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snprintf(buf, sizeof(buf), "a%03d:%d:%02dz", 5, 5, 5);
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EXPECT_STREQ("a005:5:05z", buf);
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void* p = NULL;
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snprintf(buf, sizeof(buf), "a%d,%pz", 5, p);
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#if defined(__BIONIC__)
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EXPECT_STREQ("a5,0x0z", buf);
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#else // __BIONIC__
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EXPECT_STREQ("a5,(nil)z", buf);
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#endif // __BIONIC__
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snprintf(buf, sizeof(buf), "a%lld,%d,%d,%dz", 0x1000000000LL, 6, 7, 8);
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EXPECT_STREQ("a68719476736,6,7,8z", buf);
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snprintf(buf, sizeof(buf), "a_%f_b", 1.23f);
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EXPECT_STREQ("a_1.230000_b", buf);
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snprintf(buf, sizeof(buf), "a_%g_b", 3.14);
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EXPECT_STREQ("a_3.14_b", buf);
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snprintf(buf, sizeof(buf), "%1$s %1$s", "print_me_twice");
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EXPECT_STREQ("print_me_twice print_me_twice", buf);
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}
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TEST(stdio, snprintf_f_special) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%f", nanf(""));
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EXPECT_STRCASEEQ("NaN", buf);
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snprintf(buf, sizeof(buf), "%f", HUGE_VALF);
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EXPECT_STRCASEEQ("Inf", buf);
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}
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TEST(stdio, snprintf_g_special) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%g", nan(""));
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EXPECT_STRCASEEQ("NaN", buf);
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snprintf(buf, sizeof(buf), "%g", HUGE_VAL);
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EXPECT_STRCASEEQ("Inf", buf);
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}
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TEST(stdio, snprintf_d_INT_MAX) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%d", INT_MAX);
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EXPECT_STREQ("2147483647", buf);
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}
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TEST(stdio, snprintf_d_INT_MIN) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%d", INT_MIN);
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EXPECT_STREQ("-2147483648", buf);
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}
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TEST(stdio, snprintf_ld_LONG_MAX) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%ld", LONG_MAX);
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#if __LP64__
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EXPECT_STREQ("9223372036854775807", buf);
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#else
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EXPECT_STREQ("2147483647", buf);
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#endif
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}
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TEST(stdio, snprintf_ld_LONG_MIN) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%ld", LONG_MIN);
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#if __LP64__
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EXPECT_STREQ("-9223372036854775808", buf);
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#else
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EXPECT_STREQ("-2147483648", buf);
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#endif
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}
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TEST(stdio, snprintf_lld_LLONG_MAX) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%lld", LLONG_MAX);
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EXPECT_STREQ("9223372036854775807", buf);
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}
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TEST(stdio, snprintf_lld_LLONG_MIN) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%lld", LLONG_MIN);
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EXPECT_STREQ("-9223372036854775808", buf);
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}
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TEST(stdio, snprintf_e) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%e", 1.5);
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EXPECT_STREQ("1.500000e+00", buf);
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snprintf(buf, sizeof(buf), "%Le", 1.5l);
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EXPECT_STREQ("1.500000e+00", buf);
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}
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TEST(stdio, snprintf_negative_zero_5084292) {
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char buf[BUFSIZ];
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snprintf(buf, sizeof(buf), "%f", -0.0);
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EXPECT_STREQ("-0.000000", buf);
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}
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TEST(stdio, fprintf_failures_7229520) {
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FILE* fp;
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// Unbuffered case where the fprintf(3) itself fails.
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ASSERT_NE(nullptr, fp = tmpfile());
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setbuf(fp, NULL);
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ASSERT_EQ(4, fprintf(fp, "epic"));
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ASSERT_EQ(0, close(fileno(fp)));
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ASSERT_EQ(-1, fprintf(fp, "fail"));
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ASSERT_EQ(-1, fclose(fp));
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// Buffered case where we won't notice until the fclose(3).
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// It's likely this is what was actually seen in http://b/7229520,
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// and that expecting fprintf to fail is setting yourself up for
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// disappointment. Remember to check fclose(3)'s return value, kids!
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ASSERT_NE(nullptr, fp = tmpfile());
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ASSERT_EQ(4, fprintf(fp, "epic"));
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ASSERT_EQ(0, close(fileno(fp)));
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ASSERT_EQ(4, fprintf(fp, "fail"));
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ASSERT_EQ(-1, fclose(fp));
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}
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TEST(stdio, popen) {
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FILE* fp = popen("cat /proc/version", "r");
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ASSERT_TRUE(fp != NULL);
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char buf[16];
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char* s = fgets(buf, sizeof(buf), fp);
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buf[13] = '\0';
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ASSERT_STREQ("Linux version", s);
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ASSERT_EQ(0, pclose(fp));
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}
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TEST(stdio, getc) {
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FILE* fp = fopen("/proc/version", "r");
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ASSERT_TRUE(fp != NULL);
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ASSERT_EQ('L', getc(fp));
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ASSERT_EQ('i', getc(fp));
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ASSERT_EQ('n', getc(fp));
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ASSERT_EQ('u', getc(fp));
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ASSERT_EQ('x', getc(fp));
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fclose(fp);
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}
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TEST(stdio, putc) {
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FILE* fp = fopen("/proc/version", "r");
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ASSERT_TRUE(fp != NULL);
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ASSERT_EQ(EOF, putc('x', fp));
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fclose(fp);
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}
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TEST(stdio, sscanf) {
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char s1[123];
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int i1;
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double d1;
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char s2[123];
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ASSERT_EQ(3, sscanf(" hello 123 1.23 ", "%s %i %lf %s", s1, &i1, &d1, s2));
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ASSERT_STREQ("hello", s1);
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ASSERT_EQ(123, i1);
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ASSERT_DOUBLE_EQ(1.23, d1);
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}
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TEST(stdio, cantwrite_EBADF) {
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// If we open a file read-only...
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FILE* fp = fopen("/proc/version", "r");
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// ...all attempts to write to that file should return failure.
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// They should also set errno to EBADF. This isn't POSIX, but it's traditional.
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// glibc gets the wide-character functions wrong.
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errno = 0;
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EXPECT_EQ(EOF, putc('x', fp));
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EXPECT_EQ(EBADF, errno);
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errno = 0;
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EXPECT_EQ(EOF, fprintf(fp, "hello"));
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EXPECT_EQ(EBADF, errno);
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errno = 0;
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|
EXPECT_EQ(EOF, fwprintf(fp, L"hello"));
|
|
#if defined(__BIONIC__)
|
|
EXPECT_EQ(EBADF, errno);
|
|
#endif
|
|
|
|
errno = 0;
|
|
EXPECT_EQ(EOF, putw(1234, fp));
|
|
EXPECT_EQ(EBADF, errno);
|
|
|
|
errno = 0;
|
|
EXPECT_EQ(0U, fwrite("hello", 1, 2, fp));
|
|
EXPECT_EQ(EBADF, errno);
|
|
|
|
errno = 0;
|
|
EXPECT_EQ(EOF, fputs("hello", fp));
|
|
EXPECT_EQ(EBADF, errno);
|
|
|
|
errno = 0;
|
|
EXPECT_EQ(WEOF, fputwc(L'x', fp));
|
|
#if defined(__BIONIC__)
|
|
EXPECT_EQ(EBADF, errno);
|
|
#endif
|
|
}
|
|
|
|
// Tests that we can only have a consistent and correct fpos_t when using
|
|
// f*pos functions (i.e. fpos doesn't get inside a multi byte character).
|
|
TEST(stdio, consistent_fpos_t) {
|
|
ASSERT_STREQ("C.UTF-8", setlocale(LC_CTYPE, "C.UTF-8"));
|
|
uselocale(LC_GLOBAL_LOCALE);
|
|
|
|
FILE* fp = tmpfile();
|
|
ASSERT_TRUE(fp != NULL);
|
|
|
|
wchar_t mb_one_bytes = L'h';
|
|
wchar_t mb_two_bytes = 0x00a2;
|
|
wchar_t mb_three_bytes = 0x20ac;
|
|
wchar_t mb_four_bytes = 0x24b62;
|
|
|
|
// Write to file.
|
|
ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fputwc(mb_one_bytes, fp)));
|
|
ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fputwc(mb_two_bytes, fp)));
|
|
ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fputwc(mb_three_bytes, fp)));
|
|
ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fputwc(mb_four_bytes, fp)));
|
|
|
|
rewind(fp);
|
|
|
|
// Record each character position.
|
|
fpos_t pos1;
|
|
fpos_t pos2;
|
|
fpos_t pos3;
|
|
fpos_t pos4;
|
|
fpos_t pos5;
|
|
EXPECT_EQ(0, fgetpos(fp, &pos1));
|
|
ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
EXPECT_EQ(0, fgetpos(fp, &pos2));
|
|
ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
EXPECT_EQ(0, fgetpos(fp, &pos3));
|
|
ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
EXPECT_EQ(0, fgetpos(fp, &pos4));
|
|
ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
EXPECT_EQ(0, fgetpos(fp, &pos5));
|
|
|
|
#if defined(__BIONIC__)
|
|
// Bionic's fpos_t is just an alias for off_t. This is inherited from OpenBSD
|
|
// upstream. Glibc differs by storing the mbstate_t inside its fpos_t. In
|
|
// Bionic (and upstream OpenBSD) the mbstate_t is stored inside the FILE
|
|
// structure.
|
|
ASSERT_EQ(0, static_cast<off_t>(pos1));
|
|
ASSERT_EQ(1, static_cast<off_t>(pos2));
|
|
ASSERT_EQ(3, static_cast<off_t>(pos3));
|
|
ASSERT_EQ(6, static_cast<off_t>(pos4));
|
|
ASSERT_EQ(10, static_cast<off_t>(pos5));
|
|
#endif
|
|
|
|
// Exercise back and forth movements of the position.
|
|
ASSERT_EQ(0, fsetpos(fp, &pos2));
|
|
ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
ASSERT_EQ(0, fsetpos(fp, &pos1));
|
|
ASSERT_EQ(mb_one_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
ASSERT_EQ(0, fsetpos(fp, &pos4));
|
|
ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
ASSERT_EQ(0, fsetpos(fp, &pos3));
|
|
ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
ASSERT_EQ(0, fsetpos(fp, &pos5));
|
|
ASSERT_EQ(WEOF, fgetwc(fp));
|
|
|
|
fclose(fp);
|
|
}
|
|
|
|
// Exercise the interaction between fpos and seek.
|
|
TEST(stdio, fpos_t_and_seek) {
|
|
ASSERT_STREQ("C.UTF-8", setlocale(LC_CTYPE, "C.UTF-8"));
|
|
uselocale(LC_GLOBAL_LOCALE);
|
|
|
|
// For glibc we need to close and re-open the file in order for fseek to work
|
|
// after using setlocale(LC_CTYPE, "C.UTF-8") and fputwc.
|
|
// TODO: find out if this is expected or a bug in glibc.
|
|
TemporaryFile tf;
|
|
FILE* fp = fdopen(tf.fd, "w+");
|
|
ASSERT_TRUE(fp != NULL);
|
|
|
|
wchar_t mb_two_bytes = 0x00a2;
|
|
wchar_t mb_three_bytes = 0x20ac;
|
|
wchar_t mb_four_bytes = 0x24b62;
|
|
|
|
// Write to file.
|
|
ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fputwc(mb_two_bytes, fp)));
|
|
ASSERT_EQ(mb_three_bytes, static_cast<wchar_t>(fputwc(mb_three_bytes, fp)));
|
|
ASSERT_EQ(mb_four_bytes, static_cast<wchar_t>(fputwc(mb_four_bytes, fp)));
|
|
|
|
fflush(fp);
|
|
fclose(fp);
|
|
|
|
fp = fopen(tf.filename, "r");
|
|
ASSERT_TRUE(fp != NULL);
|
|
|
|
// Store a valid position.
|
|
fpos_t mb_two_bytes_pos;
|
|
ASSERT_EQ(0, fgetpos(fp, &mb_two_bytes_pos));
|
|
|
|
// Move inside mb_four_bytes with fseek.
|
|
long offset_inside_mb = 6;
|
|
ASSERT_EQ(0, fseek(fp, offset_inside_mb, SEEK_SET));
|
|
|
|
// Store the "inside multi byte" position.
|
|
fpos_t pos_inside_mb;
|
|
ASSERT_EQ(0, fgetpos(fp, &pos_inside_mb));
|
|
#if defined(__BIONIC__)
|
|
ASSERT_EQ(offset_inside_mb, static_cast<off_t>(pos_inside_mb));
|
|
#endif
|
|
|
|
// Reading from within a byte should produce an error.
|
|
ASSERT_EQ(WEOF, fgetwc(fp));
|
|
ASSERT_EQ(EILSEQ, errno);
|
|
|
|
// Reverting to a valid position should work.
|
|
ASSERT_EQ(0, fsetpos(fp, &mb_two_bytes_pos));
|
|
ASSERT_EQ(mb_two_bytes, static_cast<wchar_t>(fgetwc(fp)));
|
|
|
|
// Moving withing a multi byte with fsetpos should work but reading should
|
|
// produce an error.
|
|
ASSERT_EQ(0, fsetpos(fp, &pos_inside_mb));
|
|
ASSERT_EQ(WEOF, fgetwc(fp));
|
|
ASSERT_EQ(EILSEQ, errno);
|
|
|
|
fclose(fp);
|
|
}
|