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Fix a stacks fuzzer regression#12755

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alexcrichton wants to merge 1 commit intobytecodealliance:mainfrom
alexcrichton:fix-fuzz
Open

Fix a stacks fuzzer regression#12755
alexcrichton wants to merge 1 commit intobytecodealliance:mainfrom
alexcrichton:fix-fuzz

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This commit fixes an accidental mistake from #12542 where when the limit of stack frames for the fuzzer to capture is None then it meant that backtraces were never captured. This updates the assertion logic to handle a missing WasmBacktrace and the case that stacks.limit is None.

This commit fixes an accidental mistake from bytecodealliance#12542 where when the
`limit` of stack frames for the fuzzer to capture is `None` then it
meant that backtraces were never captured. This updates the assertion
logic to handle a missing `WasmBacktrace` and the case that
`stacks.limit` is `None`.
@alexcrichton alexcrichton requested a review from a team as a code owner March 10, 2026 20:35
@github-actions github-actions bot added the fuzzing Issues related to our fuzzing infrastructure label Mar 10, 2026
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