derek.holloway
7502bf64a4
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59 lines
2.3 KiB
C++
59 lines
2.3 KiB
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -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-%short-stack --check-prefix=CHECK-STACK < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DHEAP=1 -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-%short-stack --check-prefix=CHECK-HEAP < %t.out
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// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -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-%short-stack --check-prefix=CHECK-STACK < %t.out
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// 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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// RUN: not %run %t >%t.out 2>&1
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// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
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#include <stdio.h>
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volatile int x, y;
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__attribute__((noinline)) void fn_g(int &a) { x = a; }
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__attribute__((noinline)) void fn_f(int &a) { fn_g(a); }
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__attribute__((noinline)) void fn_h() { y = x; }
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int main(int argc, char *argv[]) {
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#ifdef HEAP
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int * volatile zz = new int;
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int z = *zz;
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#else
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int volatile z;
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#endif
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fn_f((int &)z);
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fn_h();
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return y;
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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.cpp:}}[[@LINE-4]]
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// CHECK: Uninitialized value was stored to memory at
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// CHECK-FULL-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-18]]
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// CHECK-FULL-STACK: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-9]]
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// CHECK-SHORT-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-21]]
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// CHECK: Uninitialized value was stored to memory at
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// CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-27]]
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// CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin.cpp:}}[[@LINE-26]]
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// CHECK-FULL-STACK: {{#2 .* in main.*chained_origin.cpp:}}[[@LINE-16]]
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// CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-37]]
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// CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame
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// CHECK-STACK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-22]]
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// CHECK-HEAP: Uninitialized value was created by a heap allocation
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// CHECK-HEAP: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-28]]
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