[llvm-bugs] Issue 7742 in oss-fuzz: llvm/llvm-isel-fuzzer--wasm32-O2: Null-dereference READ in llvm::WebAssemblyAsmPrinter::EmitFunctionBodyStart

[ClusterFuzz-External via monorail via llvm-bugs]

Comment #5 on issue 7742 by ClusterFuzz-External:  
llvm/llvm-isel-fuzzer--wasm32-O2: Null-dereference READ in  
llvm::WebAssemblyAsmPrinter::EmitFunctionBodyStart
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7742#c5

ClusterFuzz has detected this issue as fixed in range  
201811180234:201811190234.

Detailed report: https://oss-fuzz.com/testcase?key=4837581448544256

Project: llvm
Fuzzer: libFuzzer_llvm_llvm-isel-fuzzer--wasm32-O2
Fuzz target binary: llvm-isel-fuzzer--wasm32-O2
Job Type: libfuzzer_asan_llvm
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
   llvm::WebAssemblyAsmPrinter::EmitFunctionBodyStart
   llvm::AsmPrinter::EmitFunctionBody
   llvm::WebAssemblyAsmPrinter::runOnMachineFunction

Sanitizer: address (ASAN)

Regressed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201804120529:201804130530
Fixed:  
https://oss-fuzz.com/revisions?job=libfuzzer_asan_llvm&range=201811180234:201811190234

Reproducer Testcase:  
https://oss-fuzz.com/download?testcase_id=4837581448544256

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for  
more information.

If you suspect that the result above is incorrect, try re-doing that job on  
the test case report page.

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