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56 lines
2.6 KiB
56 lines
2.6 KiB
4 months ago
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// RUN: %clang_cc1 -Wstrlcpy-strlcat-size -verify -fsyntax-only %s
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typedef __SIZE_TYPE__ size_t;
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size_t strlcpy (char * restrict dst, const char * restrict src, size_t size);
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size_t strlcat (char * restrict dst, const char * restrict src, size_t size);
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size_t strlen (const char *s);
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char s1[100];
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char s2[200];
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char * s3;
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struct {
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char f1[100];
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char f2[100][3];
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} s4, **s5;
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int x;
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void f(void)
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{
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strlcpy(s1, s2, sizeof(s1)); // no warning
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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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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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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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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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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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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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}
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// Don't issue FIXIT for flexible arrays.
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struct S {
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int y;
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char x[];
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};
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void flexible_arrays(struct S *s) {
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char str[] = "hi";
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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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}
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// Don't issue FIXIT for destinations of size 1.
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void size_1() {
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char z[1];
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char str[] = "hi";
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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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}
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// Support VLAs.
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void vlas(int size) {
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char z[size];
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char str[] = "hi";
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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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}
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