initial import of GCC 14.4.0 sources.
changes include fixes for at least 113 GCC bugs. the ones found
to be interesting include:
122943 - Wrong code for switch on int64_t on ilp32 targets at -O2 since r14-8302
123271 - -ftrapv fails to detect overflow on ARM32 since GCC 10 since r10-3995
and there are a lot of less scary ICE and runtime fixes.
mknative-gcc coming up next.
Handle two causes of the panic "lfs_ifile: looping". Repurpose the lfs_iflock
to be locked with RW_WRITER while the segment lock is held, preventing
updates to the Ifile while its blocks are being gathered; and allow more
iterations than 10 before panicking, since we might need to rewrite the
entire segment table one block per iteration. Issue uncovered in the course
of PR kern/60746.
Don't use malloc to store the cond and condattr clocks because we can't use
those methods during malloc initialization then; store it directly instead.
Fix so that the default value is set to the system clock as per TOG and update
the documentation to reflect that.
texinfo: patch configure to get correct RETSIGTYPE on GCC 15 (C23)
Currently harmless because RETSIGTYPE is referred only under dist/info/
and info/ is excluded in external/gpl2/texinfo/dist/Makefile.in.