Vedant Kumar 35b50a83ab [wasm] readSection: Avoid reading past eof (fixes oss-fuzz #3219) ...

A wasm file crafted with a bogus section size can trigger an ASan issue
in the DWARFObjInMemory constructor. Nip the problem in the bud when we
read the wasm section.

Found by OSS-Fuzz:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3219

Differential Revision: https://reviews.llvm.org/D38777

llvm-svn: 316357

2017-10-23 18:04:34 +00:00

22 B

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