InstrProf: Don't extend coverage regions into the catch keyword

The catch keyword isn't really part of a region, so it's fairly
meaningless to extend into it. This was usually harmless, but it could
crash when catch blocks involved macros in strange ways.

llvm-svn: 243066

1 files changed, 24 insertions, 0 deletions

diff --git a/clang/test/CoverageMapping/trymacro.cpp b/clang/test/CoverageMapping/trymacro.cpp
new file mode 100644
index 00000000000..6bd3ea219cf
--- /dev/null
+++ b/clang/test/CoverageMapping/trymacro.cpp
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 -fexceptions -fcxx-exceptions -fprofile-instr-generate -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name trymacro.cpp %s | FileCheck %s
+
+// CHECK: Z3fn1v:
+void fn1() try { return; } // CHECK: [[@LINE]]:12 -> [[@LINE+1]]:14 = #1
+catch(...) {}              // CHECK: [[@LINE]]:12 -> [[@LINE]]:14 = #2
+
+#define RETURN_BLOCK { return; }
+
+// CHECK: Z3fn2v:
+void fn2() try RETURN_BLOCK // CHECK: [[@LINE]]:12 -> [[@LINE+1]]:14 = #1
+catch(...) {}               // CHECK: [[@LINE]]:12 -> [[@LINE]]:14 = #2
+
+#define TRY try
+#define CATCH(x) catch (x)
+
+// CHECK: Z3fn3v:
+void fn3() TRY { return; } // CHECK: [[@LINE]]:12 -> [[@LINE+1]]:14 = #1
+CATCH(...) {}              // CHECK: [[@LINE]]:12 -> [[@LINE]]:14 = #2
+
+int main() {
+  fn1();
+  fn2();
+  fn3();
+}