forked from OSchip/llvm-project
36 lines
906 B
C++
36 lines
906 B
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
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// Test origin propagation through insertvalue IR instruction.
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#include <stdio.h>
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#include <stdint.h>
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struct mypair {
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int64_t x;
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int y;
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};
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mypair my_make_pair(int64_t x, int y) {
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mypair p;
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p.x = x;
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p.y = y;
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return p;
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}
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int main() {
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int64_t * volatile p = new int64_t;
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mypair z = my_make_pair(*p, 0);
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if (z.x)
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printf("zzz\n");
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// CHECK: MemorySanitizer: use-of-uninitialized-value
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// CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-3]]
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// CHECK: Uninitialized value was created by a heap allocation
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// CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-8]]
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delete p;
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return 0;
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}
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