AuroraMiddleware/v8
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Fix a bug in smi loop analysis.

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Add a missing null check that can hit when the for-loop index is
not a variable.

Review URL: http://codereview.chromium.org/840002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4101 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
fschneider@chromium.org 2010-03-11 10:37:29 +00:00
parent ef371f3f24
commit 463ab046fa
1 changed files with 1 additions and 1 deletions
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2
src/data-flow.cc
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@ -1058,7 +1058,7 @@ Variable* AssignedVariablesAnalyzer::FindSmiLoopVariable(ForStatement* stmt) {
// We only deal with local variables.
Variable* loop_var = init->target()->AsVariableProxy()->AsVariable();
if (!loop_var->IsStackAllocated()) return NULL;
if (loop_var == NULL || !loop_var->IsStackAllocated()) return NULL;
// The initial value has to be a smi.
Literal* init_lit = init->value()->AsLiteral();