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Add a unit test for %n.

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Change-Id: I9335e089d66c98d34577f5e1d1a54b8f507b94f6
This commit is contained in:
Elliott Hughes 2013-09-24 18:01:33 -07:00
parent 759111cadf
commit 7248a2d4d0
1 changed files with 12 additions and 0 deletions
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12
tests/stdio_test.cpp
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@ -183,6 +183,18 @@ TEST(stdio, printf_ssize_t) {
snprintf(buf, sizeof(buf), "%zd", v);
}
#if !defined(__GLIBC__)
TEST(stdio, snprintf_n_format_specifier_not_implemented) {
char buf[32];
int i = 0;
// We deliberately don't implement %n, so it's treated like
// any other unrecognized format specifier.
EXPECT_EQ(5, snprintf(buf, sizeof(buf), "a %n b", &i));
EXPECT_EQ(0, i);
EXPECT_STREQ("a n b", buf);
}
#endif
TEST(stdio, snprintf_smoke) {
char buf[BUFSIZ];