llvm-project

64f9bb5f - [Object][Wasm] Fix off-by-one in data segment name index validation (#196338)

[Object][Wasm] Fix off-by-one in data segment name index validation (#196338) The check `Index > DataSegments.size()` in `parseNameSection()` allows `Index == DataSegments.size()`, which is an out-of-bounds access. In an assertions-disabled ASan build, a malformed wasm object with one data segment and a data segment name entry using index 1 triggers a heap-buffer-overflow READ in `WasmObjectFile::parseNameSection()`. Fix by checking `Index >= DataSegments.size()` instead. Also add a regression test that verifies the malformed input is rejected with "invalid data segment name entry".