1 // Test various levels of coverage
2 //
3 // FIXME: Port the environment variable logic below for the lit shell.
4 // REQUIRES: shell
5 //
6 // RUN: rm -rf %T/coverage-levels && mkdir %T/coverage-levels
7 // RUN: %clangxx -fsanitize=shift -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=func %s -o %t
8 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN
9 // RUN: %clangxx -fsanitize=undefined -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=func %s -o %t
10 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN
11
12 // Also works without any sanitizer.
13 // RUN: %clangxx -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=func %s -o %t
14 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN
15
16 // RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=func %s -o %t
17 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN
18 // RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=bb %s -o %t
19 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN
20 // RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=edge %s -o %t
21 // RUN: %env_ubsan_opts=coverage=1:verbosity=1:coverage_dir='"%T/coverage-levels"' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN
22
23 // Coverage is not yet implemented in TSan.
24 // XFAIL: ubsan-tsan
25
26 volatile int sink;
main(int argc,char ** argv)27 int main(int argc, char **argv) {
28 int shift = argc * 32;
29 #if GOOD_SHIFT
30 shift = 3;
31 #endif
32 if ((argc << shift) == 16) // False.
33 return 1;
34 return 0;
35 }
36
37 // CHECK_WARN: shift exponent 32 is too large
38 // CHECK_NOWARN-NOT: ERROR
39 // FIXME: Currently, coverage instrumentation kicks in after ubsan, so we get
40 // more than the minimal number of instrumented blocks.
41 // FIXME: Currently, ubsan with -fno-sanitize-recover and w/o asan will fail
42 // to dump coverage.
43 // CHECK1: 1 PCs written
44 // CHECK2: 2 PCs written
45 // CHECK3: 2 PCs written
46