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