1 files changed, 39 insertions, 0 deletions
diff --git a/test/ubsan/TestCases/Misc/Linux/coverage-levels.cc b/test/ubsan/TestCases/Misc/Linux/coverage-levels.cc
new file mode 100644
index 000000000000..df6e835dd9df
--- /dev/null
+++ b/test/ubsan/TestCases/Misc/Linux/coverage-levels.cc
@@ -0,0 +1,39 @@
+// 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=func  %s -o %t
+// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN
+// RUN: %clangxx -fsanitize=undefined                    -DGOOD_SHIFT=1 -O1 -fsanitize-coverage=func  %s -o %t
+// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_NOWARN
+
+// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=func  %s -o %t
+// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK1 --check-prefix=CHECK_WARN
+// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=bb  %s -o %t
+// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2 --check-prefix=CHECK_WARN
+// RUN: %clangxx -fsanitize=shift -O1 -fsanitize-coverage=edge  %s -o %t
+// RUN: UBSAN_OPTIONS=$OPT %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3 --check-prefix=CHECK_WARN
+
+// Coverage is not yet implemented in TSan.
+// XFAIL: ubsan-tsan
+
+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