velzieandClaude Opus 5.5 55d30fe1c6 gexcc: sigsetjmp and _setjmp are setjmp (with the mask saved and restored) ...

clang's wasm SjLj lowering recognises only calls to setjmp. sigsetjmp
returned 0 once and a siglongjmp to it was an uncaught exception (bash
trapped on its first error: 'indirect call type mismatch'). gexcc's
include/setjmp.h (searched before musl's, include_next) makes both
macros over setjmp; rt/sigsetjmp.c saves the mask before and restores it
on the second return, as musl's assembly does elsewhere. No musl change.
tests/gexcc/sigjmp.c: out of nested calls, out of a signal handler (the
mask restored), _setjmp/_longjmp.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_f83b79c55d9e472396aae1a74ab72f57

2026-10-07 14:37:52 -04:00

..

setjmp.h

gexcc: sigsetjmp and _setjmp are setjmp (with the mask saved and restored)

2026-10-07 14:37:52 -04:00