Make CPlusPlusNameParser robust against nullptr StringRefs.

There is likely also an underlying bug in all code that calls
CPlusPlusNameParser with nullptrs, but this patch can also stand for
itself.

rdar://problem/49072829

llvm-svn: 362177

1 files changed, 6 insertions, 0 deletions

diff --git a/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp b/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
index 3047bea6bce..150bef1590f 100644
--- a/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
+++ b/lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp
@@ -6,6 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 #include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
+#include "Plugins/Language/CPlusPlus/CPlusPlusNameParser.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
@@ -192,3 +193,8 @@ TEST(CPlusPlusLanguage, FindAlternateFunctionManglings) {
   EXPECT_THAT(FindAlternate("_ZN1A1fEai"), Contains("_ZN1A1fEci"));
   EXPECT_THAT(FindAlternate("_bogus"), IsEmpty());
 }
+
+TEST(CPlusPlusLanguage, CPlusPlusNameParser) {
+  // Don't crash.
+  CPlusPlusNameParser((const char *)nullptr);
+}