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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
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