1d43e114291eed272f8d7b735d3d1c4ca4cd04986Anna Zaks// RUN: %clang_cc1 -analyze -analyzer-checker=unix.cstring.BadSizeArg -analyzer-store=region -Wno-strncat-size -Wno-strlcpy-strlcat-size -Wno-sizeof-array-argument -Wno-sizeof-pointer-memaccess -verify %s 2e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks 3e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zakstypedef __SIZE_TYPE__ size_t; 4e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zakschar *strncat(char *, const char *, size_t); 5e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zakssize_t strlen (const char *s); 6e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks 7e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaksvoid testStrncat(const char *src) { 8e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks char dest[10]; 9e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - 1); // expected-warning {{Potential buffer overflow. Replace with 'sizeof(dest) - strlen(dest) - 1' or use a safer 'strlcat' API}} 10e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest)); // expected-warning {{Potential buffer overflow. Replace with}} 11e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - strlen(dest)); // expected-warning {{Potential buffer overflow. Replace with}} 12e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks strncat(dest, src, sizeof(src)); // expected-warning {{Potential buffer overflow. Replace with}} 13e00575f12cf280621ef0ed4d69e909bdfc9fef62Anna Zaks} 14