Parse: Don't crash when default argument in typedef consists of sole '='
We'd crash trying to make the SourceRange for the tokens we'd like to
highlight. Don't assume there is more than one token makes up the
default argument.
llvm-svn: 225774
diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index b84ea7b..510738e 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -388,9 +388,14 @@
ParmVarDecl *Param = cast<ParmVarDecl>(chunk.Fun.Params[argIdx].Param);
if (Param->hasUnparsedDefaultArg()) {
CachedTokens *Toks = chunk.Fun.Params[argIdx].DefaultArgTokens;
+ SourceRange SR;
+ if (Toks->size() > 1)
+ SR = SourceRange((*Toks)[1].getLocation(),
+ Toks->back().getLocation());
+ else
+ SR = UnparsedDefaultArgLocs[Param];
Diag(Param->getLocation(), diag::err_param_default_argument_nonfunc)
- << SourceRange((*Toks)[1].getLocation(),
- Toks->back().getLocation());
+ << SR;
delete Toks;
chunk.Fun.Params[argIdx].DefaultArgTokens = nullptr;
} else if (Param->getDefaultArg()) {