derek.holloway
7502bf64a4
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26 lines
719 B
C
26 lines
719 B
C
// RUN: %clang_min_runtime -fsanitize=implicit-signed-integer-truncation %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK
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#include <stdint.h>
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int main() {
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// CHECK-NOT: implicit-conversion
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// Negative tests. Even if they produce unexpected results, this sanitizer does not care.
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int8_t n0 = (~((uint32_t)(0))); // ~0 -> -1, but do not warn.
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uint8_t n2 = 128;
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uint8_t n3 = 255;
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// Bools do not count
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_Bool b0 = (~((uint32_t)(0)));
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_Bool b1 = 255;
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// Explicit and-ing of bits will silence it.
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uint8_t nc0 = ((int32_t)(-1)) & 255;
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// Positive tests.
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uint8_t t0 = (int32_t)(-1);
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// CHECK: implicit-conversion by 0x{{[[:xdigit:]]+$}}
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// CHECK-NOT: implicit-conversion
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return 0;
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}
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