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Enhance type checking for function types in loader and improve error handling (#4294)

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Especially when GC is enabled, a valid item of `module->types` needs additional
checks before casting to WASMFuncType.

Also, avoid overflowing if reftype_map_count is 0.

Additionally, correctly set IN_OSS_FUZZ based on CFLAGS_ENV for sanitizer
configuration. Update ASan and UBSan messages for clarity in non-oss-fuzz
environments.
This commit is contained in:
liang.he
2025-05-28 20:29:09 +08:00
committed by GitHub
parent 782c69fe8a
commit 7f9e49213e
6 changed files with 52 additions and 20 deletions
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7
tests/fuzz/wasm-mutator-fuzz/CMakeLists.txt
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@ -181,7 +181,12 @@ add_link_options(-fsanitize=fuzzer -fno-sanitize=vptr)
# Enable sanitizers if not in oss-fuzz environment
set(CFLAGS_ENV $ENV{CFLAGS})
string(FIND "${CFLAGS_ENV}" "-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION" IN_OSS_FUZZ)
string(FIND "${CFLAGS_ENV}" "-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION" FUZZ_POS)
if (FUZZ_POS GREATER -1)
set(IN_OSS_FUZZ 1)
else()
set(IN_OSS_FUZZ 0)
endif()
add_subdirectory(aot-compiler)
add_subdirectory(wasm-mutator)