| 1 | // RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \ |
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| 2 | // RUN: not %run %t >%t.out 2>&1 |
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| 3 | // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%short-stack --check-prefix=CHECK-STACK < %t.out |
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| 4 | |
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| 5 | // RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \ |
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| 6 | // RUN: not %run %t >%t.out 2>&1 |
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| 7 | // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%short-stack --check-prefix=CHECK-HEAP < %t.out |
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| 8 | |
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| 9 | |
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| 10 | // RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -O3 %s -o %t && \ |
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| 11 | // RUN: not %run %t >%t.out 2>&1 |
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| 12 | // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%short-stack --check-prefix=CHECK-STACK < %t.out |
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| 13 | |
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| 14 | // RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \ |
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| 15 | // RUN: not %run %t >%t.out 2>&1 |
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| 16 | // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out |
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| 17 | |
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| 18 | #include <stdio.h> |
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| 19 | |
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| 20 | volatile int x, y; |
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| 21 | |
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| 22 | __attribute__((noinline)) void fn_g(int &a) { x = a; } |
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| 23 | |
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| 24 | __attribute__((noinline)) void fn_f(int &a) { fn_g(a); } |
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| 25 | |
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| 26 | __attribute__((noinline)) void fn_h() { y = x; } |
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| 27 | |
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| 28 | int main(int argc, char *argv[]) { |
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| 29 | #ifdef HEAP |
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| 30 | int * volatile zz = new int; |
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| 31 | int z = *zz; |
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| 32 | #else |
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| 33 | int volatile z; |
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| 34 | #endif |
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| 35 | fn_f(a&: (int &)z); |
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| 36 | fn_h(); |
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| 37 | return y; |
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| 38 | } |
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| 39 | |
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| 40 | // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
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| 41 | // CHECK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-4]] |
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| 42 | |
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| 43 | // CHECK: Uninitialized value was stored to memory at |
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| 44 | // CHECK-FULL-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-18]] |
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| 45 | // CHECK-FULL-STACK: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-9]] |
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| 46 | // CHECK-SHORT-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-21]] |
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| 47 | |
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| 48 | // CHECK: Uninitialized value was stored to memory at |
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| 49 | // CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-27]] |
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| 50 | // CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin.cpp:}}[[@LINE-26]] |
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| 51 | // CHECK-FULL-STACK: {{#2 .* in main.*chained_origin.cpp:}}[[@LINE-16]] |
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| 52 | // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-37]] |
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| 53 | |
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| 54 | // CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame |
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| 55 | // CHECK-STACK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-22]] |
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| 56 | |
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| 57 | // CHECK-HEAP: Uninitialized value was created by a heap allocation |
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| 58 | // CHECK-HEAP: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-28]] |
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| 59 | |
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