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Merge "Unit tests for formatting code, fix %%."

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This commit is contained in:
Elliott Hughes 2013-01-28 22:04:44 +00:00 committed by Gerrit Code Review
commit a0151cbfba
5 changed files with 183 additions and 156 deletions
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183
libc/bionic/debug_format.cpp
View File

@ -26,11 +26,7 @@
* SUCH DAMAGE.
*/
// Temporarily disable _FORTIFY_SOURCE to get this code to
// compile under GCC 4.7
#undef _FORTIFY_SOURCE
#include "debug_format.h"
#include <../private/debug_format.h> // Relative path so we can #include this for testing.
#include <assert.h>
#include <errno.h>
@ -40,11 +36,6 @@
#include <string.h>
#include <unistd.h>
/* define UNIT_TESTS to build this file as a single executable that runs
* the formatter's unit tests
*/
#define xxUNIT_TESTS
/*** Generic output sink
***/
@ -134,12 +125,12 @@ buf_out_length(BufOut *bo)
}
static int
vformat_buffer(char *buff, size_t buffsize, const char *format, va_list args)
vformat_buffer(char *buff, size_t buf_size, const char *format, va_list args)
{
BufOut bo;
Out *out;
out = buf_out_init(&bo, buff, buffsize);
out = buf_out_init(&bo, buff, buf_size);
if (out == NULL)
return 0;
@ -291,7 +282,7 @@ parse_decimal(const char *format, int *ppos)
// Writes number 'value' in base 'base' into buffer 'buf' of size 'buf_size' bytes.
// Assumes that buf_size > 0.
static void format_number(char* buf, size_t buf_size, uint64_t value, int base, bool caps) {
static void format_unsigned(char* buf, size_t buf_size, uint64_t value, int base, bool caps) {
char* p = buf;
char* end = buf + buf_size - 1;
@ -327,27 +318,26 @@ static void format_number(char* buf, size_t buf_size, uint64_t value, int base,
}
}
/* Write an integer (octal or decimal) into a buffer, assumes buffsize > 2 */
static void
format_integer(char *buffer, size_t buffsize, uint64_t value, int base, int isSigned)
{
// TODO: this is incorrect for MIN_INT.
if (isSigned && (int64_t)value < 0) {
buffer[0] = '-';
buffer += 1;
buffsize -= 1;
value = (uint64_t)(-(int64_t)value);
}
static void format_integer(char* buf, size_t buf_size, uint64_t value, char conversion) {
// Decode the conversion specifier.
int is_signed = (conversion == 'd' || conversion == 'i' || conversion == 'o');
int base = 10;
if (conversion == 'x' || conversion == 'X') {
base = 16;
} else if (conversion == 'o') {
base = 8;
}
bool caps = (conversion == 'X');
format_number(buffer, buffsize, value, base, false);
if (is_signed && static_cast<int64_t>(value) < 0) {
buf[0] = '-';
buf += 1;
buf_size -= 1;
value = static_cast<uint64_t>(-static_cast<int64_t>(value));
}
format_unsigned(buf, buf_size, value, base, caps);
}
// Assumes buf_size > 2.
static void format_hex(char* buf, size_t buf_size, uint64_t value, bool caps) {
format_number(buf, buf_size, value, 16, caps);
}
/* Perform formatted output to an output target 'o' */
static void
out_vformat(Out *o, const char *format, va_list args)
@ -362,7 +352,6 @@ out_vformat(Out *o, const char *format, va_list args)
int width = -1;
int prec = -1;
size_t bytelen = sizeof(int);
const char* str;
int slen;
char buffer[32]; /* temporary buffer used to format numbers */
@ -457,6 +446,7 @@ out_vformat(Out *o, const char *format, va_list args)
}
/* conversion specifier */
const char* str = buffer;
if (c == 's') {
/* string */
str = va_arg(args, const char*);
@ -468,17 +458,15 @@ out_vformat(Out *o, const char *format, va_list args)
/* NOTE: char is promoted to int when passed through the stack */
buffer[0] = (char) va_arg(args, int);
buffer[1] = '\0';
str = buffer;
} else if (c == 'p') {
uint64_t value = (uintptr_t) va_arg(args, void*);
buffer[0] = '0';
buffer[1] = 'x';
format_hex(buffer + 2, sizeof buffer-2, value, false);
str = buffer;
} else {
format_integer(buffer + 2, sizeof(buffer) - 2, value, 'x');
} else if (c == 'd' || c == 'i' || c == 'o' || c == 'x' || c == 'X') {
/* integers - first read value from stack */
uint64_t value;
int isSigned = (c == 'd' || c == 'i' || c == 'o');
int is_signed = (c == 'd' || c == 'i' || c == 'o');
/* NOTE: int8_t and int16_t are promoted to int when passed
* through the stack
@ -492,27 +480,18 @@ out_vformat(Out *o, const char *format, va_list args)
}
/* sign extension, if needed */
if (isSigned) {
if (is_signed) {
int shift = 64 - 8*bytelen;
value = (uint64_t)(((int64_t)(value << shift)) >> shift);
}
/* format the number properly into our buffer */
switch (c) {
case 'i': case 'd':
format_integer(buffer, sizeof buffer, value, 10, isSigned);
break;
case 'o':
format_integer(buffer, sizeof buffer, value, 8, isSigned);
break;
case 'x': case 'X':
format_hex(buffer, sizeof buffer, value, (c == 'X'));
break;
default:
buffer[0] = '\0';
}
/* then point to it */
str = buffer;
format_integer(buffer, sizeof(buffer), value, c);
} else if (c == '%') {
buffer[0] = '%';
buffer[1] = '\0';
} else {
__assert(__FILE__, __LINE__, "conversion specifier unsupported");
}
/* if we are here, 'str' points to the content that must be
@ -537,101 +516,3 @@ out_vformat(Out *o, const char *format, va_list args)
}
}
}
#ifdef UNIT_TESTS
#include <stdio.h>
static int gFails = 0;
#define MARGIN 40
#define UTEST_CHECK(condition,message) \
printf("Checking %-*s: ", MARGIN, message); fflush(stdout); \
if (!(condition)) { \
printf("KO\n"); \
gFails += 1; \
} else { \
printf("ok\n"); \
}
static void
utest_BufOut(void)
{
char buffer[16];
BufOut bo[1];
Out* out;
int ret;
buffer[0] = '1';
out = buf_out_init(bo, buffer, sizeof buffer);
UTEST_CHECK(buffer[0] == '\0', "buf_out_init clears initial byte");
out_send(out, "abc", 3);
UTEST_CHECK(!memcmp(buffer, "abc", 4), "out_send() works with BufOut");
out_send_repeat(out, 'X', 4);
UTEST_CHECK(!memcmp(buffer, "abcXXXX", 8), "out_send_repeat() works with BufOut");
buffer[sizeof buffer-1] = 'x';
out_send_repeat(out, 'Y', 2*sizeof(buffer));
UTEST_CHECK(buffer[sizeof buffer-1] == '\0', "overflows always zero-terminates");
out = buf_out_init(bo, buffer, sizeof buffer);
out_send_repeat(out, 'X', 2*sizeof(buffer));
ret = buf_out_length(bo);
UTEST_CHECK(ret == 2*sizeof(buffer), "correct size returned on overflow");
}
static void
utest_expect(const char* result, const char* format, ...)
{
va_list args;
BufOut bo[1];
char buffer[256];
Out* out = buf_out_init(bo, buffer, sizeof buffer);
printf("Checking %-*s: ", MARGIN, format); fflush(stdout);
va_start(args, format);
out_vformat(out, format, args);
va_end(args);
if (strcmp(result, buffer)) {
printf("KO. got '%s' expecting '%s'\n", buffer, result);
gFails += 1;
} else {
printf("ok. got '%s'\n", result);
}
}
int main(void)
{
utest_BufOut();
utest_expect("", "");
utest_expect("a", "a");
utest_expect("01234", "01234", "");
utest_expect("01234", "%s", "01234");
utest_expect("aabbcc", "aa%scc", "bb");
utest_expect("a", "%c", 'a');
utest_expect("1234", "%d", 1234);
utest_expect("-8123", "%d", -8123);
utest_expect("16", "%hd", 0x7fff0010);
utest_expect("16", "%hhd", 0x7fffff10);
utest_expect("68719476736", "%lld", 0x1000000000LL);
utest_expect("70000", "%ld", 70000);
utest_expect("0xb0001234", "%p", (void*)0xb0001234);
utest_expect("12ab", "%x", 0x12ab);
utest_expect("12AB", "%X", 0x12ab);
utest_expect("00123456", "%08x", 0x123456);
utest_expect("01234", "0%d", 1234);
utest_expect(" 1234", "%5d", 1234);
utest_expect("01234", "%05d", 1234);
utest_expect(" 1234", "%8d", 1234);
utest_expect("1234 ", "%-8d", 1234);
utest_expect("abcdef ", "%-11s", "abcdef");
utest_expect("something:1234", "%s:%d", "something", 1234);
utest_expect("005:5:05", "%03d:%d:%02d", 5, 5, 5);
utest_expect("5,0x0", "%d,%p", 5, NULL);
utest_expect("68719476736,6,7,8", "%lld,%d,%d,%d", 0x1000000000LL, 6, 7, 8);
return gFails != 0;
}
#endif /* UNIT_TESTS */

6
libc/include/signal.h
View File

@ -59,7 +59,7 @@ extern const char* const sys_signame[];
static __inline__ int sigismember(const sigset_t* set, int signum) {
int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0.
if (set == NULL || bit < 0 || bit >= 8*sizeof(sigset_t)) {
if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) {
errno = EINVAL;
return -1;
}
@ -69,7 +69,7 @@ static __inline__ int sigismember(const sigset_t* set, int signum) {
static __inline__ int sigaddset(sigset_t* set, int signum) {
int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0.
if (set == NULL || bit < 0 || bit >= 8*sizeof(sigset_t)) {
if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) {
errno = EINVAL;
return -1;
}
@ -80,7 +80,7 @@ static __inline__ int sigaddset(sigset_t* set, int signum) {
static __inline__ int sigdelset(sigset_t* set, int signum) {
int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0.
if (set == NULL || bit < 0 || bit >= 8*sizeof(sigset_t)) {
if (set == NULL || bit < 0 || bit >= (int) (8*sizeof(sigset_t))) {
errno = EINVAL;
return -1;
}

4
libc/include/stdio.h
View File

@ -523,13 +523,13 @@ char *fgets(char *dest, int size, FILE *stream)
// Compiler can prove, at compile time, that the passed in size
// is always <= the actual object size. Don't call __fgets_chk
if (__builtin_constant_p(size) && (size <= bos)) {
if (__builtin_constant_p(size) && (size <= (int) bos)) {
return __fgets_real(dest, size, stream);
}
// Compiler can prove, at compile time, that the passed in size
// is always > the actual object size. Force a compiler error.
if (__builtin_constant_p(size) && (size > bos)) {
if (__builtin_constant_p(size) && (size > (int) bos)) {
__fgets_too_big_error();
}

1
tests/Android.mk
View File

@ -53,6 +53,7 @@ test_c_flags = \
-Werror \
test_src_files = \
debug_format_test.cpp \
dirent_test.cpp \
fenv_test.cpp \
getauxval_test.cpp \

145
tests/debug_format_test.cpp Normal file
View File

@ -0,0 +1,145 @@
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#if defined(__BIONIC__)
#include "../libc/bionic/debug_format.cpp"
extern int __libc_format_buffer(char* buffer, size_t buffer_size, const char* format, ...);
TEST(debug_format, smoke) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "a");
EXPECT_STREQ("a", buf);
__libc_format_buffer(buf, sizeof(buf), "%%");
EXPECT_STREQ("%", buf);
__libc_format_buffer(buf, sizeof(buf), "01234");
EXPECT_STREQ("01234", buf);
__libc_format_buffer(buf, sizeof(buf), "a%sb", "01234");
EXPECT_STREQ("a01234b", buf);
char* s = NULL;
__libc_format_buffer(buf, sizeof(buf), "a%sb", s);
EXPECT_STREQ("a(null)b", buf);
__libc_format_buffer(buf, sizeof(buf), "aa%scc", "bb");
EXPECT_STREQ("aabbcc", buf);
__libc_format_buffer(buf, sizeof(buf), "a%cc", 'b');
EXPECT_STREQ("abc", buf);
__libc_format_buffer(buf, sizeof(buf), "a%db", 1234);
EXPECT_STREQ("a1234b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%db", -8123);
EXPECT_STREQ("a-8123b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%hdb", 0x7fff0010);
EXPECT_STREQ("a16b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%hhdb", 0x7fffff10);
EXPECT_STREQ("a16b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%lldb", 0x1000000000LL);
EXPECT_STREQ("a68719476736b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%ldb", 70000L);
EXPECT_STREQ("a70000b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%pb", reinterpret_cast<void*>(0xb0001234));
EXPECT_STREQ("a0xb0001234b", buf);
__libc_format_buffer(buf, sizeof(buf), "a%xz", 0x12ab);
EXPECT_STREQ("a12abz", buf);
__libc_format_buffer(buf, sizeof(buf), "a%Xz", 0x12ab);
EXPECT_STREQ("a12ABz", buf);
__libc_format_buffer(buf, sizeof(buf), "a%08xz", 0x123456);
EXPECT_STREQ("a00123456z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%5dz", 1234);
EXPECT_STREQ("a 1234z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%05dz", 1234);
EXPECT_STREQ("a01234z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%8dz", 1234);
EXPECT_STREQ("a 1234z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%-8dz", 1234);
EXPECT_STREQ("a1234 z", buf);
__libc_format_buffer(buf, sizeof(buf), "A%-11sZ", "abcdef");
EXPECT_STREQ("Aabcdef Z", buf);
__libc_format_buffer(buf, sizeof(buf), "A%s:%dZ", "hello", 1234);
EXPECT_STREQ("Ahello:1234Z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%03d:%d:%02dz", 5, 5, 5);
EXPECT_STREQ("a005:5:05z", buf);
void* p = NULL;
__libc_format_buffer(buf, sizeof(buf), "a%d,%pz", 5, p);
EXPECT_STREQ("a5,0x0z", buf);
__libc_format_buffer(buf, sizeof(buf), "a%lld,%d,%d,%dz", 0x1000000000LL, 6, 7, 8);
EXPECT_STREQ("a68719476736,6,7,8z", buf);
}
TEST(debug_format, d_INT_MAX) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%d", INT_MAX);
EXPECT_STREQ("2147483647", buf);
}
TEST(debug_format, d_INT_MIN) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%d", INT_MIN);
EXPECT_STREQ("-2147483648", buf);
}
TEST(debug_format, ld_LONG_MAX) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%ld", LONG_MAX);
EXPECT_STREQ("2147483647", buf);
}
TEST(debug_format, ld_LONG_MIN) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%ld", LONG_MIN);
EXPECT_STREQ("-2147483648", buf);
}
TEST(debug_format, lld_LLONG_MAX) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%lld", LLONG_MAX);
EXPECT_STREQ("9223372036854775807", buf);
}
TEST(debug_format, lld_LLONG_MIN) {
char buf[BUFSIZ];
__libc_format_buffer(buf, sizeof(buf), "%lld", LLONG_MIN);
EXPECT_STREQ("-9223372036854775808", buf);
}
#endif