150
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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 #include <sanitizer/msan_interface.h>
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7
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8 int main(int argc, char **argv) {
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9 int x;
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10 int *volatile p = &x;
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11 return __sanitizer_unaligned_load32(p);
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12 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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13 // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-2]]
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236
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14 // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame
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15 // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-6]]
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150
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16 }
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