Improve lexing of invalid annotations (fixes fuzz failure) #2150
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sbc100
approved these changes
Feb 25, 2023
This had been crashing even with annotations disabled. Adds a regression test. This was missed in #2001 when updating the parser to match the updated spec (WebAssembly/spec#1499). Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53935
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wat2wasmhad been crashing on some invalid annotations, even with annotations disabled (as found by oss-fuzz in issue 53935).I missed this in #2001 when updating the parser to match the updated spec (WebAssembly/spec#1499). This PR fixes the lexer and adds a regression test.
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53935
N.B. With annotations enabled,
wat2wasmseems to go into an infinite loop on this same input; will require further investigation.