| 1 | // RUN: %clang_cc1 -Wstrlcpy-strlcat-size -verify -fsyntax-only %s |
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| 2 | |
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| 3 | typedef __SIZE_TYPE__ size_t; |
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| 4 | size_t strlcpy (char * restrict dst, const char * restrict src, size_t size); |
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| 5 | size_t strlcat (char * restrict dst, const char * restrict src, size_t size); |
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| 6 | size_t strlen (const char *s); |
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| 7 | |
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| 8 | char s1[100]; |
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| 9 | char s2[200]; |
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| 10 | char * s3; |
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| 11 | |
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| 12 | struct { |
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| 13 | char f1[100]; |
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| 14 | char f2[100][3]; |
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| 15 | } s4, **s5; |
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| 16 | |
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| 17 | int x; |
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| 18 | |
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| 19 | void f(void) |
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| 20 | { |
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| 21 | strlcpy(s1, s2, sizeof(s1)); // no warning |
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| 22 | 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}} |
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| 23 | 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}} |
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| 24 | 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}} |
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| 25 | 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}} |
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| 26 | 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}} |
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| 27 | 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}} |
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| 28 | } |
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| 29 | |
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| 30 | // Don't issue FIXIT for flexible arrays. |
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| 31 | struct S { |
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| 32 | int y; |
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| 33 | char x[]; |
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| 34 | }; |
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| 35 | |
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| 36 | void flexible_arrays(struct S *s) { |
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| 37 | char str[] = "hi"; |
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| 38 | 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}} |
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| 39 | } |
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| 40 | |
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| 41 | // Don't issue FIXIT for destinations of size 1. |
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| 42 | void size_1() { |
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| 43 | char z[1]; |
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| 44 | char str[] = "hi"; |
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| 45 | |
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| 46 | 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}} |
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| 47 | } |
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| 48 | |
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| 49 | // Support VLAs. |
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| 50 | void vlas(int size) { |
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| 51 | char z[size]; |
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| 52 | char str[] = "hi"; |
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| 53 | |
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| 54 | 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}} |
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| 55 | } |
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| 56 | |
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