Zubin pushed to branch wip/26613 at Glasgow Haskell Compiler / GHC Commits: 259bc7fd by Zubin Duggal at 2025-11-28T13:43:25+05:30 rts/linker/PEi386: Copy strings before they are inserted into LoadedDllCache. The original strings are temporary and might be freed at an arbitrary point. Fixes #26613 - - - - - 1 changed file: - rts/linker/PEi386.c Changes: ===================================== rts/linker/PEi386.c ===================================== @@ -552,7 +552,12 @@ static int compare_path(StgWord key1, StgWord key2) static void addLoadedDll(LoadedDllCache *cache, const pathchar *dll_name, HINSTANCE instance) { - insertHashTable_(cache->hash, (StgWord) dll_name, instance, hash_path); + // dll_name might be deallocated, we need to copy it to have a stable reference to the contents + // See #26613 + size_t size = wcslen(dll_name) + 1; + pathchar* dll_name_copy = stgMallocBytes(size * sizeof(pathchar), "addLoadedDll"); + wcscpy(dll_name_copy, dll_name); + insertHashTable_(cache->hash, (StgWord) dll_name_copy, instance, hash_path); } static HINSTANCE isDllLoaded(const LoadedDllCache *cache, const pathchar *dll_name) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/259bc7fdf5bc734b944de507cedfb8d6... -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/259bc7fdf5bc734b944de507cedfb8d6... You're receiving this email because of your account on gitlab.haskell.org.