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Fix a panic with an invalid name section #3509

Merged
merged 1 commit into from
Nov 5, 2021
Merged

Fix a panic with an invalid name section #3509

merged 1 commit into from
Nov 5, 2021

Commits on Nov 5, 2021

  1. Fix a panic with an invalid name section 

    This commit fixes a panic which can happen on a module with an invalid
name section where one of the functions named has the index `u32::MAX`.
Previously Wasmtime would create a new `FuncIndex` with the indices
found in the name section but the sentinel `u32::MAX` causes a panic.

Cranelift otherwise limits the number of functions through `wasmparser`
which has a hard limit (lower than `u32::MAX`) so this commit applies a
fix of only recording function names for function indices that are
actually present in the module.
    @alexcrichton
    alexcrichton committed Nov 5, 2021
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