Re: NetBSD/vax 11.0RC1

On 11/3/26 01:13, Maciej W. Rozycki wrote:
> On Mon, 23 Feb 2026, Ken Wellsch wrote:
>
>> /bin/sh ./libtool  --tag=CC   --mode=compile cc -DHAVE_CONFIG_H -I. -I/usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace  -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../include -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../libgcc -I ../libgcc -DNETBSD_TOOLS -DTARGET_SYSTEM_ROOT=0  -DTARGET_SYSTEM_ROOT_RELOCATABLE -DNB_FIX_VAX_BACKEND -funwind-tables -frandom-seed=mmapio.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual   -O   -c -o mmapio.lo /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmapio.c
>> libtool: compile:  cc -DHAVE_CONFIG_H -I. -I/usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../include -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../libgcc -I ../libgcc -DNETBSD_TOOLS -DTARGET_SYSTEM_ROOT=0 -DTARGET_SYSTEM_ROOT_RELOCATABLE -DNB_FIX_VAX_BACKEND -funwind-tables -frandom-seed=mmapio.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -O -c /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmapio.c  -fPIC -DPIC -o .libs/mmapio.o
>> libtool: compile:  cc -DHAVE_CONFIG_H -I. -I/usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../include -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../libgcc -I ../libgcc -DNETBSD_TOOLS -DTARGET_SYSTEM_ROOT=0 -DTARGET_SYSTEM_ROOT_RELOCATABLE -DNB_FIX_VAX_BACKEND -funwind-tables -frandom-seed=mmapio.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -O -c /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmapio.c -o mmapio.o >/dev/null 2>&1
>> /bin/sh ./libtool  --tag=CC   --mode=compile cc -DHAVE_CONFIG_H -I. -I/usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace  -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../include -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../libgcc -I ../libgcc -DNETBSD_TOOLS -DTARGET_SYSTEM_ROOT=0  -DTARGET_SYSTEM_ROOT_RELOCATABLE -DNB_FIX_VAX_BACKEND -funwind-tables -frandom-seed=mmap.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual   -O   -c -o mmap.lo /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmap.c
>> libtool: compile:  cc -DHAVE_CONFIG_H -I. -I/usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../include -I /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/../libgcc -I ../libgcc -DNETBSD_TOOLS -DTARGET_SYSTEM_ROOT=0 -DTARGET_SYSTEM_ROOT_RELOCATABLE -DNB_FIX_VAX_BACKEND -funwind-tables -frandom-seed=mmap.lo -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -O -c /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmap.c  -fPIC -DPIC -o .libs/mmap.o
>> during RTL pass: bbro
>> /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmap.c: In function 'backtrace_free':
>> /usr/src/tools/gcc/../../external/gpl3/gcc/dist/libbacktrace/mmap.c:238:1: internal compiler error: in redirect_jump, at jump.cc:1495
>>    238 | }
>>        | ^
>> 0xeea666 diagnostic_impl(rich_location*, diagnostic_metadata const*, int, char const*, void**, diagnostic_t)
>>          ???:0
>> 0xeea8ef internal_error(char const*, ...)
>>          ???:0
>> 0xfbaab2 fancy_abort(char const*, int, char const*)
>>          ???:0
>> 0x456702 redirect_jump(rtx_jump_insn*, rtx_def*, int)
>>          ???:0
>> 0x77087f force_nonfallthru_and_redirect(edge_def*, basic_block_def*, rtx_def*)
>>          ???:0
>> 0x771fbc cfg_layout_finalize()
>>          ???:0
>> 0x77d525 (anonymous namespace)::pass_reorder_blocks::execute(function*)
>>          ???:0
>> Please submit a full bug report, with preprocessed source (by using -freport-bug).
>> Please include the complete backtrace with any bug report.
>> See <http://www.NetBSD.org/support/send-pr.html> for instructions.
>> nbgmake[2]: *** [mmap.lo] Error 1
>> nbgmake[2]: Leaving directory `/usr/obj/tools/gcc/build/libbacktrace'
>> nbgmake[1]: *** [all] Error 2
>> nbgmake[1]: Leaving directory `/usr/obj/tools/gcc/build/libbacktrace'
>> nbgmake: *** [all-libbacktrace] Error 2
>   If this is reproducible with upstream GCC, then I can have a look into
> it.
>
>    Maciej

I think I have a test case.

https://www.netbsd.org/~kalvisd/gcc-vax-internal-error-bbro.i

Compile with cc -O -c gcc-vax-internal-error-bbro.i

I tried the native gcc 14.3.0.nb2 from -current for VAX, the cross gcc 
14.3.0.nb2 from -current for VAX on amd64 and  cross gcc 15.2.0 from 
upstream for VAX on amd64 (and i686) - all of them failed with the same 
internal error.

Compilation without optimisation was successful.

cheers

kalvis