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[BitcodeReader] Make sure the type of the inserted value matches the type of the aggregate at those indices

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Bug found with AFL-fuzz.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237628 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Filipe Cabecinhas
2015-05-18 22:27:11 +00:00
parent 4d632b44e2
commit b2bf278152
3 changed files with 8 additions and 0 deletions
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3
lib/Bitcode/Reader/BitcodeReader.cpp
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@@ -3644,6 +3644,9 @@ std::error_code BitcodeReader::ParseFunctionBody(Function *F) {
CurTy = CurTy->subtypes()[0]; CurTy = CurTy->subtypes()[0];
} }
if (CurTy != Val->getType())
return Error("Inserted value type doesn't match aggregate type");
I = InsertValueInst::Create(Agg, Val, INSERTVALIdx); I = InsertValueInst::Create(Agg, Val, INSERTVALIdx);
InstructionList.push_back(I); InstructionList.push_back(I);
break; break;

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test/Bitcode/Inputs/invalid-inserted-value-type-mismatch.bc Normal file
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5
test/Bitcode/invalid.test
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@@ -142,3 +142,8 @@ RUN: not llvm-dis -disable-output %p/Inputs/invalid-load-ptr-type.bc 2>&1 | \
RUN: FileCheck --check-prefix=BAD-LOAD-PTR-TYPE %s RUN: FileCheck --check-prefix=BAD-LOAD-PTR-TYPE %s
BAD-LOAD-PTR-TYPE: Cannot load/store from pointer BAD-LOAD-PTR-TYPE: Cannot load/store from pointer
RUN: not llvm-dis -disable-output %p/Inputs/invalid-inserted-value-type-mismatch.bc 2>&1 | \
RUN: FileCheck --check-prefix=INSERT-TYPE-MISMATCH %s
INSERT-TYPE-MISMATCH: Inserted value type doesn't match aggregate type