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Differential Revision: http://reviews.llvm.org/D15871 llvm-svn: 256804
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// Test __sanitizer_coverage_pc_buffer(). | ||
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// RUN: %clangxx_asan -fsanitize-coverage=edge %s -o %t && %run %t | ||
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// UNSUPPORTED: android | ||
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#include <assert.h> | ||
#include <sanitizer/coverage_interface.h> | ||
#include <stdio.h> | ||
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static volatile int sink; | ||
__attribute__((noinline)) void bar() { sink = 2; } | ||
__attribute__((noinline)) void foo() { sink = 1; } | ||
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void assertNotZeroPcs(uintptr_t *buf, uintptr_t size) { | ||
assert(buf); | ||
for (uintptr_t i = 0; i < size; ++i) | ||
assert(buf[i]); | ||
} | ||
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int main() { | ||
uintptr_t *buf = NULL; | ||
uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf); | ||
assertNotZeroPcs(buf, sz); | ||
assert(sz); | ||
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foo(); | ||
bar(); | ||
uintptr_t *buf1 = NULL; | ||
uintptr_t sz1 = __sanitizer_get_coverage_pc_buffer(&buf1); | ||
assertNotZeroPcs(buf1, sz1); | ||
assert(buf1 == buf); | ||
assert(sz1 > sz); | ||
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bar(); | ||
uintptr_t *buf2 = NULL; | ||
uintptr_t sz2 = __sanitizer_get_coverage_pc_buffer(&buf2); | ||
assertNotZeroPcs(buf2, sz2); | ||
assert(buf2 == buf); | ||
assert(sz2 > sz1); | ||
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__sanitizer_reset_coverage(); | ||
uintptr_t *buf3 = NULL; | ||
uintptr_t sz3 = __sanitizer_get_coverage_pc_buffer(&buf3); | ||
assertNotZeroPcs(buf3, sz3); | ||
assert(buf3 == buf); | ||
assert(sz3 < sz2); | ||
} |