1// Test various levels of coverage 2// 3// RUN: mkdir -p %T/coverage-levels 4// RUN: OPT=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels 5// RUN: %clangxx -fsanitize=shift -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=1 %s -o %t 6// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN 7// RUN: %clangxx -fsanitize=undefined -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=1 %s -o %t 8// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN 9 10// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=1 %s -o %t 11// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN 12// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=2 %s -o %t 13// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN 14// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=3 %s -o %t 15// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN 16 17volatile int sink; 18int main(int argc, char **argv) { 19 int shift = argc * 32; 20#if GOOD_SHIFT 21 shift = 3; 22#endif 23 if ((argc << shift) == 16) // False. 24 return 1; 25 return 0; 26} 27 28// CHECK_WARN: shift exponent 32 is too large 29// CHECK_NOWARN-NOT: ERROR 30// FIXME: Currently, coverage instrumentation kicks in after ubsan, so we get 31// more than the minimal number of instrumented blocks. 32// FIXME: Currently, ubsan with -fno-sanitize-recover and w/o asan will fail 33// to dump coverage. 34// CHECK1: 1 PCs written 35// CHECK2: 3 PCs written 36// CHECK3: 4 PCs written 37