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author | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
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committer | Carlo Zancanaro <carlo@pc-4w14-0.cs.usyd.edu.au> | 2012-10-15 17:10:06 +1100 |
commit | be1de4be954c80875ad4108e0a33e8e131b2f2c0 (patch) | |
tree | 1fbbecf276bf7c7bdcbb4dd446099d6d90eaa516 /clang/test/Sema/warn-strlcpycat-size.c | |
parent | c4626a62754862d20b41e8a46a3574264ea80e6d (diff) | |
parent | f1bd2e48c5324d3f7cda4090c87f8a5b6f463ce2 (diff) |
Merge branch 'master' of ssh://bitbucket.org/czan/honours
Diffstat (limited to 'clang/test/Sema/warn-strlcpycat-size.c')
-rw-r--r-- | clang/test/Sema/warn-strlcpycat-size.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/clang/test/Sema/warn-strlcpycat-size.c b/clang/test/Sema/warn-strlcpycat-size.c new file mode 100644 index 0000000..8babdde --- /dev/null +++ b/clang/test/Sema/warn-strlcpycat-size.c @@ -0,0 +1,55 @@ +// RUN: %clang_cc1 -Wstrlcpy-strlcat-size -verify -fsyntax-only %s + +typedef __SIZE_TYPE__ size_t; +size_t strlcpy (char * restrict dst, const char * restrict src, size_t size); +size_t strlcat (char * restrict dst, const char * restrict src, size_t size); +size_t strlen (const char *s); + +char s1[100]; +char s2[200]; +char * s3; + +struct { + char f1[100]; + char f2[100][3]; +} s4, **s5; + +int x; + +void f(void) +{ + strlcpy(s1, s2, sizeof(s1)); // no warning + strlcpy(s1, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} + strlcpy(s1, s3, strlen(s3)+1); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} + strlcat(s2, s3, sizeof(s3)); // expected-warning {{size argument in 'strlcat' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} + strlcpy(s4.f1, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} + strlcpy((*s5)->f2[x], s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} + strlcpy(s1+3, s2, sizeof(s2)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} +} + +// Don't issue FIXIT for flexible arrays. +struct S { + int y; + char x[]; +}; + +void flexible_arrays(struct S *s) { + char str[] = "hi"; + strlcpy(s->x, str, sizeof(str)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} +} + +// Don't issue FIXIT for destinations of size 1. +void size_1() { + char z[1]; + char str[] = "hi"; + + strlcpy(z, str, sizeof(str)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} +} + +// Support VLAs. +void vlas(int size) { + char z[size]; + char str[] = "hi"; + + strlcpy(z, str, sizeof(str)); // expected-warning {{size argument in 'strlcpy' call appears to be size of the source; expected the size of the destination}} expected-note {{change size argument to be the size of the destination}} +} |