In StringLiteralParser::init(), fail gracefully if the string is
not as we expect; it may be due to racing issue of a file coming from PCH
changing after the PCH is loaded.
rdar://11353109
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156043 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/LiteralSupport.cpp b/lib/Lex/LiteralSupport.cpp
index c1d228b..b01fc1f 100644
--- a/lib/Lex/LiteralSupport.cpp
+++ b/lib/Lex/LiteralSupport.cpp
@@ -1192,7 +1192,12 @@
if (DiagnoseBadString(StringToks[i]))
hadError = true;
} else {
- assert(ThisTokBuf[0] == '"' && "Expected quote, lexer broken?");
+ if (ThisTokBuf[0] != '"') {
+ // The file may have come from PCH and then changed after loading the
+ // PCH; Fail gracefully.
+ hadError = true;
+ continue;
+ }
++ThisTokBuf; // skip "
// Check if this is a pascal string
