derek.holloway
7502bf64a4
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81 lines
3.3 KiB
C
81 lines
3.3 KiB
C
// RUN: %clang_cc1 -fsyntax-only --std=c23 -verify -Wnonnull -Wno-format-security %s
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// RUN: %clang_cc1 -fsyntax-only --std=c23 -verify -Wnonnull -Wno-format-security -fexperimental-new-constant-interpreter %s
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#define NULL (void*)0
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typedef struct _FILE FILE;
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typedef __SIZE_TYPE__ size_t;
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typedef __builtin_va_list va_list;
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int printf(char const* restrict, ...);
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int __builtin_printf(char const* restrict, ...);
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int fprintf(FILE* restrict, char const* restrict, ...);
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int snprintf(char* restrict, size_t, char const* restrict, ...);
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int sprintf(char* restrict, char const* restrict, ...);
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int vprintf(char const* restrict, __builtin_va_list);
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int vfprintf(FILE* restrict, char const* restrict, __builtin_va_list);
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int vsnprintf(char* restrict, size_t, char const* restrict, __builtin_va_list);
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int vsprintf(char* restrict, char const* restrict, __builtin_va_list);
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int scanf(char const* restrict, ...);
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int fscanf(FILE* restrict, char const* restrict, ...);
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int sscanf(char const* restrict, char const* restrict, ...);
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int vscanf(char const* restrict, __builtin_va_list);
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int vfscanf(FILE* restrict, char const* restrict, __builtin_va_list);
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int vsscanf(char const* restrict, char const* restrict, __builtin_va_list);
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void check_format_string(FILE *fp, va_list ap) {
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char buf[256];
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int num;
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char* const fmt = NULL;
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printf(fmt);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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__builtin_printf(NULL, "xxd");
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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fprintf(fp, NULL, 25);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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sprintf(NULL, NULL, 42);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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// expected-warning@-2{{null passed to a callee that requires a non-null argument}}
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snprintf(buf, 10, 0, 42);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vprintf(fmt, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vfprintf(fp, 0, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vsprintf(buf, nullptr, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vsnprintf(buf, 10, fmt, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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scanf(NULL);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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fscanf(nullptr, nullptr);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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// expected-warning@-2{{null passed to a callee that requires a non-null argument}}
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sscanf(NULL, "%d %s", &num, buf);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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sscanf(buf, fmt);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vscanf(NULL, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vfscanf(fp, fmt, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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vsscanf(buf, NULL, ap);
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// expected-warning@-1{{null passed to a callee that requires a non-null argument}}
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}
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