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-rw-r--r--lib/Analysis/UninitializedValues.cpp17
1 files changed, 11 insertions, 6 deletions
diff --git a/lib/Analysis/UninitializedValues.cpp b/lib/Analysis/UninitializedValues.cpp
index a64c1db530..b84b4309d9 100644
--- a/lib/Analysis/UninitializedValues.cpp
+++ b/lib/Analysis/UninitializedValues.cpp
@@ -464,14 +464,19 @@ void TransferFunctions::VisitDeclStmt(DeclStmt *ds) {
if (init == lastLoad) {
DeclRefExpr *DR =
cast<DeclRefExpr>(lastLoad->getSubExpr()->IgnoreParens());
- vals[vd] = (DR->getDecl() == vd) ? Uninitialized : Initialized;
- lastLoad = 0;
- if (lastDR == DR)
+ if (DR->getDecl() == vd) {
+ // int x = x;
+ // Propagate uninitialized value, but don't immediately report
+ // a problem.
+ vals[vd] = Uninitialized;
+ lastLoad = 0;
lastDR = 0;
+ return;
+ }
}
- else {
- vals[vd] = Initialized;
- }
+
+ // All other cases: treat the new variable as initialized.
+ vals[vd] = Initialized;
}
}
}