From 7aae2f23c85feab28bc2f47c11067bd6f11af7f6 Mon Sep 17 00:00:00 2001 From: Filipe Cabecinhas Date: Tue, 3 Nov 2015 13:48:26 +0000 Subject: Don't assert if materializing before seeing any function bodies This assert was reachable from user input. A minimized test case (no FUNCTION_BLOCK_ID record) is attached. Bug found with afl-fuzz llvm-svn: 251910 --- llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Bitcode/Reader') diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp index 74a5553ce6e..c874a84e0cb 100644 --- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp @@ -3055,7 +3055,9 @@ std::error_code BitcodeReader::rememberAndSkipFunctionBodies() { if (Stream.AtEndOfStream()) return error("Could not find function in stream"); - assert(SeenFirstFunctionBody); + if (!SeenFirstFunctionBody) + return error("Trying to materialize functions before seeing function blocks"); + // An old bitcode file with the symbol table at the end would have // finished the parse greedily. assert(SeenValueSymbolTable); -- cgit v1.2.3