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Handle wasmparser errors gracefully.

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This commit is contained in:
Dan Gohman
2017-08-29 06:16:22 -07:00
parent 0deaa616a3
commit 5303e7708b
1 changed files with 4 additions and 1 deletions
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5
lib/wasm/src/module_translator.rs
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@@ -1,6 +1,6 @@
//! Translation skeletton that traverses the whole WebAssembly module and call helper functions //! Translation skeletton that traverses the whole WebAssembly module and call helper functions
//! to deal with each part of it. //! to deal with each part of it.
use wasmparser::{ParserState, SectionCode, ParserInput, Parser, WasmDecoder}; use wasmparser::{ParserState, SectionCode, ParserInput, Parser, WasmDecoder, BinaryReaderError};
use sections_translator::{SectionParsingError, parse_function_signatures, parse_import_section, use sections_translator::{SectionParsingError, parse_function_signatures, parse_import_section,
parse_function_section, parse_export_section, parse_memory_section, parse_function_section, parse_export_section, parse_memory_section,
parse_global_section, parse_table_section, parse_elements_section, parse_global_section, parse_table_section, parse_elements_section,
@@ -64,6 +64,9 @@ pub fn translate_module(data: &Vec<u8>,
let mut parser = Parser::new(data.as_slice()); let mut parser = Parser::new(data.as_slice());
match *parser.read() { match *parser.read() {
ParserState::BeginWasm { .. } => {} ParserState::BeginWasm { .. } => {}
ParserState::Error(BinaryReaderError { message, offset }) => {
return Err(format!("at offset {}: {}", offset, message));
}
ref s @ _ => panic!("modules should begin properly: {:?}", s), ref s @ _ => panic!("modules should begin properly: {:?}", s),
} }
let mut signatures = None; let mut signatures = None;