23 lines
709 B
C++
23 lines
709 B
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %t 2>&1 | FileCheck %s
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %t 2>&1 | FileCheck %s
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %t 2>&1 | FileCheck %s
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// Test condition origin propagation through "select" IR instruction.
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#include <stdio.h>
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#include <stdint.h>
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__attribute__((noinline))
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int *max_by_ptr(int *a, int *b) {
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return *a < *b ? b : a;
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}
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int main(void) {
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int x;
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int *volatile px = &x;
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int y = 43;
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int *p = max_by_ptr(px, &y);
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// CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
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return *p;
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}
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