diff options
Diffstat (limited to 'test/ubsan/TestCases')
| -rw-r--r-- | test/ubsan/TestCases/Misc/coverage-levels.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/ubsan/TestCases/Misc/coverage-levels.cc b/test/ubsan/TestCases/Misc/coverage-levels.cc new file mode 100644 index 000000000..02521722f --- /dev/null +++ b/test/ubsan/TestCases/Misc/coverage-levels.cc @@ -0,0 +1,36 @@ +// Test various levels of coverage +// +// RUN: mkdir -p %T/coverage-levels +// RUN: OPT=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels +// RUN: %clangxx -fsanitize=shift -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=1 %s -o %t +// RUN: UBSAN_OPTIONS=$OPT ASAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN +// RUN: %clangxx -fsanitize=undefined -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=1 %s -o %t +// RUN: UBSAN_OPTIONS=$OPT ASAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN + +// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=1 %s -o %t +// RUN: UBSAN_OPTIONS=$OPT ASAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN +// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=2 %s -o %t +// RUN: UBSAN_OPTIONS=$OPT ASAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN +// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=3 %s -o %t +// RUN: UBSAN_OPTIONS=$OPT ASAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN + +volatile int sink; +int main(int argc, char **argv) { + int shift = argc * 32; +#if GOOD_SHIFT + shift = 3; +#endif + if ((argc << shift) == 16) // False. + return 1; + return 0; +} + +// CHECK_WARN: shift exponent 32 is too large +// CHECK_NOWARN-NOT: ERROR +// FIXME: Currently, coverage instrumentation kicks in after ubsan, so we get +// more than the minimal number of instrumented blocks. +// FIXME: Currently, ubsan with -fno-sanitize-recover and w/o asan will fail +// to dump coverage. +// CHECK1: 1 PCs written +// CHECK2: 3 PCs written +// CHECK3: 4 PCs written |