forked from OSchip/llvm-project
28 lines
953 B
C
28 lines
953 B
C
// RUN: %check_clang_tidy %s cert-msc32-c %t -- -config="{CheckOptions: [{key: cert-msc32-c.DisallowedSeedTypes, value: 'some_type,time_t'}]}" -- -std=c99
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void srand(int seed);
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typedef int time_t;
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time_t time(time_t *t);
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void f() {
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srand(1);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: random number generator seeded with a constant value will generate a predictable sequence of values [cert-msc32-c]
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const int a = 1;
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srand(a);
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: random number generator seeded with a constant value will generate a predictable sequence of values [cert-msc32-c]
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time_t t;
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srand(time(&t)); // Disallowed seed type
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: random number generator seeded with a disallowed source of seed value will generate a predictable sequence of values [cert-msc32-c]
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}
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void g() {
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typedef int user_t;
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user_t a = 1;
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srand(a);
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int b = 1;
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srand(b); // Can not evaluate as int
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}
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