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539bebed9c
* Fix RETHROW handler missing IS_INVALID_TAGINDEX check Add validation for exception_tag_index in the RETHROW opcode handler to prevent out-of-bounds access to module->module->tags[] when the tag index is INVALID_TAGINDEX (0xFFFFFFFF). This matches the existing check in the THROW handler. When CATCH_ALL catches a cross-module exception with an unknown tag, it pushes INVALID_TAGINDEX onto the stack. Without this check, a subsequent RETHROW would access tags[0xFFFFFFFF]. * Fix incorrect code section byte counts in exception handling test The hand-crafted WASM binary in load_module_with_exception_handling had an off-by-one in the code section: body size was declared as 7 but the actual body (local count + try/catch_all/end/end) is only 6 bytes. This caused the WASM loader to fail with "unexpected end" when it tried to read past the available bytes. Fix the body size from 7 to 6 and the code section size from 9 to 8. |
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