| 1 | // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 |
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| 2 | // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out |
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| 3 | // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1 |
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| 4 | // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out |
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| 5 | |
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| 6 | // Test origin propagation through insertvalue IR instruction. |
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| 7 | |
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| 8 | #include <stdio.h> |
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| 9 | #include <stdint.h> |
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| 10 | |
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| 11 | struct mypair { |
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| 12 | int64_t x; |
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| 13 | int y; |
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| 14 | }; |
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| 15 | |
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| 16 | mypair my_make_pair(int64_t &x, int y) { |
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| 17 | mypair p; |
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| 18 | p.x = x; |
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| 19 | p.y = y; |
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| 20 | return p; |
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| 21 | } |
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| 22 | |
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| 23 | int main() { |
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| 24 | int64_t * volatile p = new int64_t; |
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| 25 | mypair z = my_make_pair(x&: *p, y: 0); |
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| 26 | if (z.x) |
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| 27 | printf(format: "zzz\n" ); |
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| 28 | // CHECK: MemorySanitizer: use-of-uninitialized-value |
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| 29 | // CHECK: {{in main .*insertvalue_origin.cpp:}}[[@LINE-3]] |
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| 30 | |
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| 31 | // CHECK: Uninitialized value was created by a heap allocation |
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| 32 | // CHECK: {{in main .*insertvalue_origin.cpp:}}[[@LINE-8]] |
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| 33 | delete p; |
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| 34 | return 0; |
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| 35 | } |
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| 36 | |
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