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[sanitizers] rewriting test assuming assert() changes coverage. 

Summary:
On windows platform assert() call creates two distinct CFG edges
which are coverage-instrumented. Simply calling assert would
change coverage numbers on the platform.

Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19514

llvm-svn: 267610
This commit is contained in:
Mike Aizatsky 2016-04-26 21:56:14 +00:00
parent 38c87c2e50
commit a3060c1159
1 changed files with 41 additions and 17 deletions
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58
compiler-rt/test/asan/TestCases/coverage-pc-buffer.cc
View File

@ -19,23 +19,47 @@ void assertNotZeroPcs(uintptr_t *buf, uintptr_t size) {
} }
int main() { int main() {
uintptr_t *buf = NULL; {
uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf); uintptr_t *buf = NULL;
assertNotZeroPcs(buf, sz); uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf);
assert(sz); assertNotZeroPcs(buf, sz);
assert(sz);
}
foo(); {
bar(); uintptr_t *buf = NULL;
uintptr_t *buf1 = NULL; uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf);
uintptr_t sz1 = __sanitizer_get_coverage_pc_buffer(&buf1); // call functions for the first time.
assertNotZeroPcs(buf1, sz1); foo();
assert(buf1 == buf); bar();
assert(sz1 > sz); uintptr_t *buf1 = NULL;
uintptr_t sz1 = __sanitizer_get_coverage_pc_buffer(&buf1);
assertNotZeroPcs(buf1, sz1);
assert(buf1 == buf);
assert(sz1 > sz);
}
__sanitizer_reset_coverage(); {
uintptr_t *buf3 = NULL; uintptr_t *buf = NULL;
uintptr_t sz3 = __sanitizer_get_coverage_pc_buffer(&buf3); uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf);
assertNotZeroPcs(buf3, sz3); // second call shouldn't increase coverage.
assert(buf3 == buf); bar();
assert(sz3 < sz1); uintptr_t *buf1 = NULL;
uintptr_t sz1 = __sanitizer_get_coverage_pc_buffer(&buf1);
assertNotZeroPcs(buf1, sz1);
assert(buf1 == buf);
assert(sz1 == sz);
}
{
uintptr_t *buf = NULL;
uintptr_t sz = __sanitizer_get_coverage_pc_buffer(&buf);
// reset coverage to 0.
__sanitizer_reset_coverage();
uintptr_t *buf1 = NULL;
uintptr_t sz1 = __sanitizer_get_coverage_pc_buffer(&buf1);
assertNotZeroPcs(buf1, sz1);
assert(buf1 == buf);
assert(sz1 < sz);
}
} }