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16 lines
1.0 KiB
C
16 lines
1.0 KiB
C
// 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
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typedef __SIZE_TYPE__ size_t;
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char *strncat(char *, const char *, size_t);
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size_t strlen (const char *s);
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void testStrncat(const char *src) {
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char dest[10];
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strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - 1); // expected-warning {{Potential buffer overflow. Replace with 'sizeof(dest) - strlen(dest) - 1' or use a safer 'strlcat' API}}
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strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest)); // expected-warning {{Potential buffer overflow. Replace with}}
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strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(dest) - strlen(dest)); // expected-warning {{Potential buffer overflow. Replace with}}
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strncat(dest, src, sizeof(src)); // expected-warning {{Potential buffer overflow. Replace with}}
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// Should not crash when sizeof has a type argument.
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strncat(dest, "AAAAAAAAAAAAAAAAAAAAAAAAAAA", sizeof(char));
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}
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