commit 8b3dc6bbed468c5110e10b52de5da5854bcc28a8
author Ryan Harrison <rharrison@google.com> Tue Jun 01 09:09:31 2021 -0400
committer GitHub <noreply@github.com> Tue Jun 01 09:09:31 2021 -0400
tree c06885cae359d72f988ca53629d0d2788e032c54
parent 0861a8fa21bd26f72ac15194ba5e518669932048

Check that valid bitcasted constant was returned (#4311)

This call returns nullptr to indicate errors.

Fixes https://crbug.com/1213365

source/opt/folding_rules.cpp

diff --git a/source/opt/folding_rules.cpp b/source/opt/folding_rules.cpp
index e6add15..e3e926c 100644
--- a/source/opt/folding_rules.cpp
+++ b/source/opt/folding_rules.cpp
@@ -1867,6 +1867,8 @@
 
     const analysis::Constant* bitcasted_constant =
         ConvertWordsToNumericScalarOrVectorConstant(const_mgr, words, type);
+    if (!bitcasted_constant) return false;
+
     auto new_feeder_id =
         const_mgr->GetDefiningInstruction(bitcasted_constant, inst->type_id())
             ->result_id();