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61 lines
2.0 KiB
61 lines
2.0 KiB
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \ |
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// RUN: not %run %t >%t.out 2>&1 |
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out |
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// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \ |
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// RUN: not %run %t >%t.out 2>&1 |
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out |
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// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \ |
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// RUN: not %run %t >%t.out 2>&1 |
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out |
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// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \ |
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// RUN: not %run %t >%t.out 2>&1 |
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out |
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#include <stdio.h> |
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#include <string.h> |
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int xx[10000]; |
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int yy[10000]; |
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volatile int idx = 30; |
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__attribute__((noinline)) |
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void fn_g(int a, int b) { |
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xx[idx] = a; xx[idx + 10] = b; |
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} |
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__attribute__((noinline)) |
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void fn_f(int a, int b) { |
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fn_g(a, b); |
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} |
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__attribute__((noinline)) |
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void fn_h() { |
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memcpy(&yy, &xx, sizeof(xx)); |
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} |
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int main(int argc, char *argv[]) { |
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int volatile z1; |
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int volatile z2; |
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fn_f(z1, z2); |
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fn_h(); |
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return yy[idx + OFFSET]; |
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} |
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
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// CHECK: {{#0 .* in main .*chained_origin_memcpy.cc:46}} |
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// CHECK: Uninitialized value was stored to memory at |
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// CHECK: {{#1 .* in fn_h.*chained_origin_memcpy.cc:38}} |
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// CHECK: Uninitialized value was stored to memory at |
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// CHECK: {{#0 .* in fn_g.*chained_origin_memcpy.cc:28}} |
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// CHECK: {{#1 .* in fn_f.*chained_origin_memcpy.cc:33}} |
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// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame of function 'main' |
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// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame of function 'main' |
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// CHECK: {{#0 .* in main.*chained_origin_memcpy.cc:41}}
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