6be0f82b96
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.
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
(module (func (export "empty")))
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(invoke "empty")
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(module binary
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"\00asm\01\00\00\00" ;; module header
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"\00" ;; custom section id 0
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"\0e" ;; section size
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"\04name" ;; this is the `name` custom section
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"\01" ;; function name subsection
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"\07" ;; function name subsection size
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"\01" ;; 1 function name mapping
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"\ff\ff\ff\ff\0f" ;; index == u32::MAX
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"\00" ;; empty string name
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)
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(module binary
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"\00asm\01\00\00\00" ;; module header
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"\00" ;; custom section id 0
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"\10" ;; section size
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"\04name" ;; this is the `name` custom section
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"\02" ;; local name subsection
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"\09" ;; local name subsection size
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"\01" ;; 1 indirect name map
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"\ff\ff\ff\ff\0f" ;; index == u32::MAX (function)
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"\01" ;; 1 name mapping
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"\00" ;; index == 0 (local)
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"\00" ;; empty string name
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)
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(module binary
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"\00asm\01\00\00\00" ;; module header
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"\00" ;; custom section id 0
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"\10" ;; section size
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"\04name" ;; this is the `name` custom section
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"\02" ;; local name subsection
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"\09" ;; local name subsection size
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"\01" ;; 1 indirect name map
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"\00" ;; index == 0 (function)
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"\01" ;; 1 name mapping
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"\ff\ff\ff\ff\0f" ;; index == u32::MAX (local)
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"\00" ;; empty string name
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)
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