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-rw-r--r--include/clang/Basic/Diagnostic.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/clang/Basic/Diagnostic.h b/include/clang/Basic/Diagnostic.h
index fb1d7a629e..fb3e5953da 100644
--- a/include/clang/Basic/Diagnostic.h
+++ b/include/clang/Basic/Diagnostic.h
@@ -214,6 +214,7 @@ class DiagnosticInfo {
public:
DiagnosticInfo(Diagnostic *diagObj, FullSourceLoc loc, unsigned diagID) :
DiagObj(diagObj), Loc(loc), DiagID(diagID) {
+ if (DiagObj == 0) return;
assert(DiagObj->NumDiagArgs == -1 &&
"Multiple diagnostics in flight at once!");
DiagObj->NumDiagArgs = DiagObj->NumDiagRanges = 0;