Fix ICE when handling optional return types in gccrs

gccrs resolves an ICE that occurred when dealing with optional return types.

By Philip Herron August 23, 2026 committed

An Internal Compiler Error (ICE) in gccrs, triggered by optional return types, has been resolved. The fix involves adding a guard in the hir/rust-hir-dump.cc file to handle these cases correctly. This addresses issue #4814.

In Details

The hir/rust-hir-dump.cc file is responsible for dumping the High-Level Intermediate Representation (HIR) in gccrs. This change adds a check within the Dump::do_typepathfunction to prevent an ICE when encountering an optional return type, ensuring more robust HIR dumping. This is relevant for debugging and analysis of Rust code within GCC.

Filed Under: rustcompilerbugfix

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