96 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify %s2//3 4typedef __SIZE_TYPE__ size_t;5extern "C" void *memset(void *, int, size_t);6extern "C" void *memmove(void *s1, const void *s2, size_t n);7extern "C" void *memcpy(void *s1, const void *s2, size_t n);8extern "C" int memcmp(void *s1, const void *s2, size_t n);9extern "C" int strncmp(const char *s1, const char *s2, size_t n);10extern "C" int strncasecmp(const char *s1, const char *s2, size_t n);11extern "C" char *strncpy(char *dst, const char *src, size_t n);12extern "C" char *strncat(char *dst, const char *src, size_t n);13extern "C" char *strndup(const char *src, size_t n);14extern "C" size_t strlcpy(char *dst, const char *src, size_t size);15extern "C" size_t strlcat(char *dst, const char *src, size_t size);16 17void 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 // FIXME: This fixit is bogus.32 if (memcpy(b1, b2, sizeof(b1) < 0)) {} // \33 expected-warning{{size argument in 'memcpy' call is a comparison}} \34 expected-note {{did you mean to compare}} \35 expected-note {{explicitly cast the argument}}36 if (memcpy(b1, b2, sizeof(b1)) < 0) {} // expected-error {{ordered comparison between pointer and zero}}37 38 if (memcmp(b1, b2, sizeof(b1) <= 0)) {} // \39 expected-warning{{size argument in 'memcmp' call is a comparison}} \40 expected-note {{did you mean to compare}} \41 expected-note {{explicitly cast the argument}}42 if (memcmp(b1, b2, sizeof(b1)) <= 0) {}43 44 if (strncmp(b1, b2, sizeof(b1) > 0)) {} // \45 expected-warning{{size argument in 'strncmp' call is a comparison}} \46 expected-note {{did you mean to compare}} \47 expected-note {{explicitly cast the argument}}48 if (strncmp(b1, b2, sizeof(b1)) > 0) {}49 50 if (strncasecmp(b1, b2, sizeof(b1) >= 0)) {} // \51 expected-warning{{size argument in 'strncasecmp' call is a comparison}} \52 expected-note {{did you mean to compare}} \53 expected-note {{explicitly cast the argument}}54 if (strncasecmp(b1, b2, sizeof(b1)) >= 0) {}55 56 if (strncpy(b1, b2, sizeof(b1) == 0 || true)) {} // \57 expected-warning{{size argument in 'strncpy' call is a comparison}} \58 expected-note {{did you mean to compare}} \59 expected-note {{explicitly cast the argument}}60 if (strncpy(b1, b2, sizeof(b1)) == 0 || true) {}61 62 // FIXME: This fixit is bogus.63 if (strncat(b1, b2, sizeof(b1) - 1 >= 0 && true)) {} // \64 expected-warning{{size argument in 'strncat' call is a comparison}} \65 expected-note {{did you mean to compare}} \66 expected-note {{explicitly cast the argument}}67 if (strncat(b1, b2, sizeof(b1) - 1) >= 0 && true) {} // expected-error {{ordered comparison between pointer and zero}}68 69 if (strndup(b1, sizeof(b1) != 0)) {} // \70 expected-warning{{size argument in 'strndup' call is a comparison}} \71 expected-note {{did you mean to compare}} \72 expected-note {{explicitly cast the argument}}73 if (strndup(b1, sizeof(b1)) != 0) {}74 75 if (strlcpy(b1, b2, sizeof(b1) != 0)) {} // \76 expected-warning{{size argument in 'strlcpy' call is a comparison}} \77 expected-note {{did you mean to compare}} \78 expected-note {{explicitly cast the argument}}79 if (strlcpy(b1, b2, sizeof(b1)) != 0) {}80 81 if (strlcat(b1, b2, sizeof(b1) != 0)) {} // \82 expected-warning{{size argument in 'strlcat' call is a comparison}} \83 expected-note {{did you mean to compare}} \84 expected-note {{explicitly cast the argument}}85 if (strlcat(b1, b2, sizeof(b1)) != 0) {}86 87 if (memset(b1, 0, sizeof(b1) / 2)) {}88 if (memset(b1, 0, sizeof(b1) >> 2)) {}89 if (memset(b1, 0, 4 << 2)) {}90 if (memset(b1, 0, 4 + 2)) {}91 if (memset(b1, 0, 4 - 2)) {}92 if (memset(b1, 0, 4 * 2)) {}93 94 if (memset(b1, 0, (size_t)(sizeof(b1) != 0))) {}95}96