Merge pull request root-project#22 from Dr15Jones/lockTMethodCallRetu…

…rnType Add missing lock.
Dr15Jones · Sep 15, 2014 · 67f4a75 · 67f4a75
2 parents 6685636 + 800d8db
commit 67f4a75
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/core/meta/src/TMethodCall.cxx b/core/meta/src/TMethodCall.cxx
@@ -467,6 +467,12 @@ TMethodCall::EReturnType TMethodCall::ReturnType()
    // Since finding the return type is expensive the result is cached.
 
    if ( fRetType == kNone) {
+      R__LOCKGUARD2(gCINTMutex);
+
+      if ( fRetType != kNone) {
+         return fRetType;
+      }
+
       TFunction *func = GetMethod();
       if (func == 0) {
          fRetType = kOther;