1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 // 3 4 typedef __SIZE_TYPE__ size_t; 5 extern "C" void *memset(void *, int, size_t); 6 extern "C" void *memmove(void *s1, const void *s2, size_t n); 7 extern "C" void *memcpy(void *s1, const void *s2, size_t n); 8 extern "C" void *memcmp(void *s1, const void *s2, size_t n); 9 extern "C" int strncmp(const char *s1, const char *s2, size_t n); 10 extern "C" int strncasecmp(const char *s1, const char *s2, size_t n); 11 extern "C" char *strncpy(char *dst, const char *src, size_t n); 12 extern "C" char *strncat(char *dst, const char *src, size_t n); 13 extern "C" char *strndup(const char *src, size_t n); 14 extern "C" size_t strlcpy(char *dst, const char *src, size_t size); 15 extern "C" size_t strlcat(char *dst, const char *src, size_t size); 16 17 void f() { 18 char b1[80], b2[80]; 19 if (memset(b1, 0, sizeof(b1) != 0)) {} // \ 20 expected-warning{{size argument in 'memset' call is a comparison}} \ 21 expected-note {{did you mean to compare}} \ 22 expected-note {{explicitly cast the argument}} 23 if (memset(b1, 0, sizeof(b1)) != 0) {} 24 25 if (memmove(b1, b2, sizeof(b1) == 0)) {} // \ 26 expected-warning{{size argument in 'memmove' call is a comparison}} \ 27 expected-note {{did you mean to compare}} \ 28 expected-note {{explicitly cast the argument}} 29 if (memmove(b1, b2, sizeof(b1)) == 0) {} 30 31 if (memcpy(b1, b2, sizeof(b1) < 0)) {} // \ 32 expected-warning{{size argument in 'memcpy' call is a comparison}} \ 33 expected-note {{did you mean to compare}} \ 34 expected-note {{explicitly cast the argument}} 35 if (memcpy(b1, b2, sizeof(b1)) < 0) {} 36 37 if (memcmp(b1, b2, sizeof(b1) <= 0)) {} // \ 38 expected-warning{{size argument in 'memcmp' call is a comparison}} \ 39 expected-note {{did you mean to compare}} \ 40 expected-note {{explicitly cast the argument}} 41 if (memcmp(b1, b2, sizeof(b1)) <= 0) {} 42 43 if (strncmp(b1, b2, sizeof(b1) > 0)) {} // \ 44 expected-warning{{size argument in 'strncmp' call is a comparison}} \ 45 expected-note {{did you mean to compare}} \ 46 expected-note {{explicitly cast the argument}} 47 if (strncmp(b1, b2, sizeof(b1)) > 0) {} 48 49 if (strncasecmp(b1, b2, sizeof(b1) >= 0)) {} // \ 50 expected-warning{{size argument in 'strncasecmp' call is a comparison}} \ 51 expected-note {{did you mean to compare}} \ 52 expected-note {{explicitly cast the argument}} 53 if (strncasecmp(b1, b2, sizeof(b1)) >= 0) {} 54 55 if (strncpy(b1, b2, sizeof(b1) == 0 || true)) {} // \ 56 expected-warning{{size argument in 'strncpy' call is a comparison}} \ 57 expected-note {{did you mean to compare}} \ 58 expected-note {{explicitly cast the argument}} 59 if (strncpy(b1, b2, sizeof(b1)) == 0 || true) {} 60 61 if (strncat(b1, b2, sizeof(b1) - 1 >= 0 && true)) {} // \ 62 expected-warning{{size argument in 'strncat' call is a comparison}} \ 63 expected-note {{did you mean to compare}} \ 64 expected-note {{explicitly cast the argument}} 65 if (strncat(b1, b2, sizeof(b1) - 1) >= 0 && true) {} 66 67 if (strndup(b1, sizeof(b1) != 0)) {} // \ 68 expected-warning{{size argument in 'strndup' call is a comparison}} \ 69 expected-note {{did you mean to compare}} \ 70 expected-note {{explicitly cast the argument}} 71 if (strndup(b1, sizeof(b1)) != 0) {} 72 73 if (strlcpy(b1, b2, sizeof(b1) != 0)) {} // \ 74 expected-warning{{size argument in 'strlcpy' call is a comparison}} \ 75 expected-note {{did you mean to compare}} \ 76 expected-note {{explicitly cast the argument}} 77 if (strlcpy(b1, b2, sizeof(b1)) != 0) {} 78 79 if (strlcat(b1, b2, sizeof(b1) != 0)) {} // \ 80 expected-warning{{size argument in 'strlcat' call is a comparison}} \ 81 expected-note {{did you mean to compare}} \ 82 expected-note {{explicitly cast the argument}} 83 if (strlcat(b1, b2, sizeof(b1)) != 0) {} 84 85 if (memset(b1, 0, sizeof(b1) / 2)) {} 86 if (memset(b1, 0, sizeof(b1) >> 2)) {} 87 if (memset(b1, 0, 4 << 2)) {} 88 if (memset(b1, 0, 4 + 2)) {} 89 if (memset(b1, 0, 4 - 2)) {} 90 if (memset(b1, 0, 4 * 2)) {} 91 92 if (memset(b1, 0, (size_t)(sizeof(b1) != 0))) {} 93 } 94
