[llvm] [WebAssembly] Limit increase of Ctx.End (PR #76676)

[Sam Clegg via llvm-commits]

sbc100 wrote:

> Am not sure what the status is on this one in terms of testing: are we keeping the unit test or? if not, I can add the reproducer testcase linked to in https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65432 to the directory mentioned by @sbc100 -- however, I suspect many fuzzers won't have a given binary in a similar way to just add the fuzzer files? Does it perhaps make more sense to create a folder next to the fuzzer with the testcases that has produced errors in the past? This would at least be more general from a fuzzing perspective.

I like the test, but I'd prefer binaries to be checked in as separate files.

I'm not a fan a direct fuzzer outputs being checked in unless we can't find a way to reduce to something small/understandable (such as the one in this case).

https://github.com/llvm/llvm-project/pull/76676