[LLVMbugs] [Bug 11926] Clang segfaults during bootstrap (warning related?)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11926

Markus Trippelsdorf <markus at trippelsdorf.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |

--- Comment #17 from Markus Trippelsdorf <markus at trippelsdorf.de> 2012-04-28 05:36:09 CDT ---
According to http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53147

  const CFGStmt *cstmt = block->front().getAs<CFGStmt>();

block->front() returns a temp variable which ends its life after the statement
ends.

The following patch fixes this me:

diff --git a/clang/lib/Analysis/UninitializedValues.cpp
b/clang/lib/Analysis/UninitializedValues.cpp
index 6e5da25..ae3030a 100644
--- a/clang/lib/Analysis/UninitializedValues.cpp
+++ b/clang/lib/Analysis/UninitializedValues.cpp
@@ -168,7 +168,8 @@ static const BinaryOperator
*getLogicalOperatorInChain(const CFGBlock *block) {
   if (block->empty())
     return 0;

-  const CFGStmt *cstmt = block->front().getAs<CFGStmt>();
+  CFGElement bf = block->front();
+  const CFGStmt *cstmt = bf.getAs<CFGStmt>();
   if (!cstmt)
     return 0;

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