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author | Alexey Samsonov <samsonov@google.com> | 2014-02-14 14:06:10 +0000 |
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committer | Alexey Samsonov <samsonov@google.com> | 2014-02-14 14:06:10 +0000 |
commit | ba2d0d7b386f38c97eee11749f2fc75449c2b253 (patch) | |
tree | 645ce9b32dc3f7727d3bac94f8c3387d051b9c01 /test/asan/TestCases/Linux/malloc-in-qsort.cc | |
parent | 5811f0e1e955866b76b0d9ebeccd2e4755c1dac8 (diff) |
Move ASan lit-tests under test/asan
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@201413 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/asan/TestCases/Linux/malloc-in-qsort.cc')
-rw-r--r-- | test/asan/TestCases/Linux/malloc-in-qsort.cc | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/test/asan/TestCases/Linux/malloc-in-qsort.cc b/test/asan/TestCases/Linux/malloc-in-qsort.cc new file mode 100644 index 000000000..3251b35e1 --- /dev/null +++ b/test/asan/TestCases/Linux/malloc-in-qsort.cc @@ -0,0 +1,56 @@ +// RUN: %clangxx_asan -O2 %s -o %t +// RUN: ASAN_OPTIONS=fast_unwind_on_malloc=1 not %t 2>&1 | FileCheck %s --check-prefix=CHECK-FAST +// RUN: ASAN_OPTIONS=fast_unwind_on_malloc=0 not %t 2>&1 | FileCheck %s --check-prefix=CHECK-SLOW + +// Test how well we unwind in presence of qsort in the stack +// (i.e. if we can unwind through a function compiled w/o frame pointers). +// https://code.google.com/p/address-sanitizer/issues/detail?id=137 + +// Fast unwinder is only avaliable on x86_64 and i386. +// REQUIRES: x86_64-supported-target + +// REQUIRES: compiler-rt-optimized + +#include <stdlib.h> +#include <stdio.h> + +int *GlobalPtr; + +extern "C" { +int QsortCallback(const void *a, const void *b) { + char *x = (char*)a; + char *y = (char*)b; + printf("Calling QsortCallback\n"); + GlobalPtr = new int[10]; + return (int)*x - (int)*y; +} + +__attribute__((noinline)) +void MyQsort(char *a, size_t size) { + printf("Calling qsort\n"); + qsort(a, size, sizeof(char), QsortCallback); + printf("Done\n"); // Avoid tail call. +} +} // extern "C" + +int main() { + char a[2] = {1, 2}; + MyQsort(a, 2); + return GlobalPtr[10]; +} + +// Fast unwind: can not unwind through qsort. +// FIXME: this test does not properly work with slow unwind yet. + +// CHECK-FAST: ERROR: AddressSanitizer: heap-buffer-overflow +// CHECK-FAST: is located 0 bytes to the right +// CHECK-FAST: #0{{.*}}operator new +// CHECK-FAST-NEXT: #1{{.*}}QsortCallback +// CHECK-FAST-NOT: MyQsort +// +// CHECK-SLOW: ERROR: AddressSanitizer: heap-buffer-overflow +// CHECK-SLOW: is located 0 bytes to the right +// CHECK-SLOW: #0{{.*}}operator new +// CHECK-SLOW-NEXT: #1{{.*}}QsortCallback +// CHECK-SLOW: #{{.*}}MyQsort +// CHECK-SLOW-NEXT: #{{.*}}main |