| // 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=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN |
| // RUN: %clangxx -fsanitize=undefined -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=1 %s -o %t |
| // RUN: UBSAN_OPTIONS=$OPT %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=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN |
| // RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=2 %s -o %t |
| // RUN: UBSAN_OPTIONS=$OPT %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 %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 |
