diff options
Diffstat (limited to 'include/llvm/Analysis/AliasSetTracker.h')
| -rw-r--r-- | include/llvm/Analysis/AliasSetTracker.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/llvm/Analysis/AliasSetTracker.h b/include/llvm/Analysis/AliasSetTracker.h index 5d11b22c6eed9..eac97501c759c 100644 --- a/include/llvm/Analysis/AliasSetTracker.h +++ b/include/llvm/Analysis/AliasSetTracker.h @@ -121,7 +121,10 @@ class AliasSet : public ilist_node<AliasSet> { AliasSet *Forward; /// All instructions without a specific address in this alias set. - std::vector<AssertingVH<Instruction> > UnknownInsts; + /// In rare cases this vector can have a null'ed out WeakVH + /// instances (can happen if some other loop pass deletes an + /// instruction in this list). + std::vector<WeakVH> UnknownInsts; /// Number of nodes pointing to this AliasSet plus the number of AliasSets /// forwarding to it. @@ -171,7 +174,7 @@ class AliasSet : public ilist_node<AliasSet> { Instruction *getUnknownInst(unsigned i) const { assert(i < UnknownInsts.size()); - return UnknownInsts[i]; + return cast_or_null<Instruction>(UnknownInsts[i]); } public: |