Merging r155803:
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r155803 | rsmith | 2012-04-29 17:16:51 -0700 (Sun, 29 Apr 2012) | 8 lines
PR11926 + duplicates: Fix crash in -Wuninitialized when using a compiler like
g++4.7, which reuses stack space allocated for temporaries. CFGElement::getAs
returns a suitably-cast version of 'this'. Patch by Markus Trippelsdorf!
No test: this code has the same observable behavior as the old code when built
with most compilers, and the tests were already failing when built with a
compiler for which this produced a broken binary.
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llvm-svn: 156394
diff --git a/clang/lib/Analysis/UninitializedValues.cpp b/clang/lib/Analysis/UninitializedValues.cpp
index 6e5da25..1c7e6b6 100644
--- a/clang/lib/Analysis/UninitializedValues.cpp
+++ b/clang/lib/Analysis/UninitializedValues.cpp
@@ -168,7 +168,8 @@
if (block->empty())
return 0;
- const CFGStmt *cstmt = block->front().getAs<CFGStmt>();
+ CFGElement front = block->front();
+ const CFGStmt *cstmt = front.getAs<CFGStmt>();
if (!cstmt)
return 0;
