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Konstantin Belousov 9dae9b31d2 libthr: require both _Unwind_ForcedUnwind and _Unwind_GetCFA for !PIC

Static linking must bring in both symbols for the unwind to work.

The landing pads added by 2734bbbcba reference _Unwind_Resume and
__gcc_personality_v0. In a static link, these pull UnwindLevel1.o
from libgcc_eh.a, which also defines _Unwind_ForcedUnwind, but
not UnwindLevel1-gcc-ext.o, which defines _Unwind_GetCFA. Unless
something else pulls that object in, as libcxxrt does for C++ programs,
thread_unwind_stop() calls a NULL _Unwind_GetCFA on every thread exit.

Reported and tested by:	dch
Fixes:	2734bbbcba ("libthr: Create landing pad in thr_once in C++ exception")
Sponsored by:	The FreeBSD Foundation

2026-11-07 01:21:08 +02:00

arch

libthr/amd64: do not set THR_C_RUNTIME for thr_new() if the main thread did used AMD64_SET_TLSBASE

2025-06-22 09:14:07 +03:00

sys

libc: provide the declaration for __libsys_errno in libc_private.h

2026-10-30 15:51:02 +02:00

tests

libthr: test pthread_query_np(3) and pthread_query_all_np(3)

2026-10-30 15:51:03 +02:00

thread

libthr: require both _Unwind_ForcedUnwind and _Unwind_GetCFA for !PIC