diff options
Diffstat (limited to 'clang/test/SemaCXX/warn-memset-bad-sizeof.cpp')
| -rw-r--r-- | clang/test/SemaCXX/warn-memset-bad-sizeof.cpp | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/warn-memset-bad-sizeof.cpp b/clang/test/SemaCXX/warn-memset-bad-sizeof.cpp index f4876ab442f..a018223cbda 100644 --- a/clang/test/SemaCXX/warn-memset-bad-sizeof.cpp +++ b/clang/test/SemaCXX/warn-memset-bad-sizeof.cpp @@ -112,3 +112,28 @@ void f(int* i) { memset(i, 0, sizeof(i)); } } + +extern "C" int strncmp(const char *s1, const char *s2, unsigned n); +extern "C" int strncasecmp(const char *s1, const char *s2, unsigned n); +extern "C" char *strncpy(char *det, const char *src, unsigned n); +extern "C" char *strncat(char *dst, const char *src, unsigned n); +extern "C" char *strndup(const char *src, unsigned n); + +void strcpy_and_friends() { + const char* FOO = "<- should be an array instead"; + const char* BAR = "<- this, too"; + + strncmp(FOO, BAR, sizeof(FOO)); // \ + // expected-warning {{argument to 'sizeof' in 'strncmp' call is the same expression as the destination}} + strncasecmp(FOO, BAR, sizeof(FOO)); // \ + // expected-warning {{argument to 'sizeof' in 'strncasecmp' call is the same expression as the destination}} + + char buff[80]; + + strncpy(buff, BAR, sizeof(BAR)); // \ + // expected-warning {{argument to 'sizeof' in 'strncpy' call is the same expression as the source}} + strncat(buff, BAR, sizeof(BAR)); // \ + // expected-warning {{argument to 'sizeof' in 'strncat' call is the same expression as the source}} + strndup(FOO, sizeof(FOO)); // \ + // expected-warning {{argument to 'sizeof' in 'strndup' call is the same expression as the source}} +} |
