1// Test various levels of coverage 2// 3// RUN: %clangxx_msan -DINIT_VAR=1 -O1 -fsanitize-coverage=func %s -o %t 4// RUN: mkdir -p %T/coverage-levels 5// RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN 6// RUN: %clangxx_msan -O1 -fsanitize-coverage=func %s -o %t 7// RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN 8// RUN: %clangxx_msan -O1 -fsanitize-coverage=bb %s -o %t 9// RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN 10// RUN: %clangxx_msan -O1 -fsanitize-coverage=edge %s -o %t 11// RUN: MSAN_OPTIONS=coverage=1:verbosity=1:coverage_dir=%T/coverage-levels not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN 12// 13volatile int sink; 14int main(int argc, char **argv) { 15 int var; 16#if INIT_VAR 17 var = 0; 18#endif 19 if (argc == 0) 20 sink = 0; 21 return *(volatile int*)&var; 22} 23 24// CHECK_WARN: WARNING: MemorySanitizer: use-of-uninitialized-value 25// CHECK_NOWARN-NOT: ERROR 26// CHECK1: 1 PCs written 27// CHECK2: 1 PCs written 28// CHECK3: 2 PCs written 29