https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120059
Bug ID: 120059
Summary: [16 regression] ICE when building mesa in vartrack
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
```
Program received signal SIGSEGV, Segmentation fault.
avoid_constant_pool_reference (x=x@entry=0x0) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:201
201 poly_int64 offset = 0;
#0 avoid_constant_pool_reference (x=x@entry=0x0) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:201
#1 0x00005555565ddac2 in simplify_context::simplify_unary_operation
(this=0x7fffffffc250, code=NOT, mode=E_QImode, op=0x0, op_mode=E_QImode) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:887
#2 simplify_context::simplify_gen_unary (this=this@entry=0x7fffffffc250,
code=code@entry=NOT, mode=mode@entry=E_QImode, op=0x0,
op_mode=op_mode@entry=E_QImode) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:360
#3 0x00005555565e1dc1 in simplify_gen_unary (code=NOT, mode=E_QImode,
op=<optimized out>, op_mode=E_QImode) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/rtl.h:3540
#4 simplify_with_subreg_not (binop=binop@entry=AND, mode=mode@entry=E_QImode,
op0=op0@entry=0x7ffff30a4cc0, op1=op1@entry=0x7ffff7209500) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:3066
#5 0x00005555565cacf0 in simplify_context::simplify_binary_operation_1
(this=0x7fffffffc510, code=AND, mode=E_QImode, op0=0x7ffff30a4cc0,
op1=0x7ffff7209500, trueop0=<optimized out>, trueop1=0x7ffff7209500) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:4334
#6 0x00005555565d2f47 in simplify_context::simplify_binary_operation
(this=0x7fffffffc510, code=AND, mode=E_QImode, op0=0x7ffff30a4cc0,
op1=0x7ffff7209500) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:2767
#7 0x00005555565d6681 in simplify_binary_operation (code=<optimized out>,
mode=E_QImode, op0=<optimized out>, op1=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/rtl.h:3510
#8 simplify_rtx (x=x@entry=0x7ffff30a4ca8) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/simplify-rtx.cc:8500
#9 0x000055555604e983 in cselib_expand_value_rtx_1 (orig=0x7ffff33e5630,
evd=0x7fffffffc650, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2166
#10 0x000055555604e2cb in cselib_expand_value_rtx_1 (orig=0x7ffff33e5648,
evd=0x7fffffffc650, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2063
#11 0x000055555604f883 in cselib_expand_value_rtx_cb
(orig=orig@entry=0x7ffff33e5648, regs_active=regs_active@entry=0x5555595a80a8,
max_depth=max_depth@entry=2147483647, cb=cb@entry=0x555556a33fe0
<vt_expand_loc_callback(rtx, bitmap, int, void*)>,
data=data@entry=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:1873
#12 0x0000555556a33b97 in vt_expand_var_loc_chain
(var=var@entry=0x55555a2ed190, regs=regs@entry=0x5555595a80a8,
data=data@entry=0x7fffffffce20, pendrecp=pendrecp@entry=0x7fffffffc737) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8411
#13 0x0000555556a34482 in vt_expand_loc_callback (x=0x555559a85948,
regs=0x5555595a80a8, max_depth=<optimized out>, data=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8574
#14 0x000055555604e766 in cselib_expand_value_rtx_1 (orig=0x555559a85948,
evd=0x7fffffffc8b0, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2025
#15 0x000055555604e2cb in cselib_expand_value_rtx_1 (orig=0x7ffff33e56a8,
evd=0x7fffffffc8b0, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2063
#16 0x000055555604f883 in cselib_expand_value_rtx_cb
(orig=orig@entry=0x7ffff33e56a8, regs_active=regs_active@entry=0x5555595a80a8,
max_depth=max_depth@entry=2147483647, cb=cb@entry=0x555556a33fe0
<vt_expand_loc_callback(rtx, bitmap, int, void*)>,
data=data@entry=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:1873
#17 0x0000555556a33b97 in vt_expand_var_loc_chain
(var=var@entry=0x55555a2f1990, regs=regs@entry=0x5555595a80a8,
data=data@entry=0x7fffffffce20, pendrecp=pendrecp@entry=0x7fffffffc997) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8411
#18 0x0000555556a34482 in vt_expand_loc_callback (x=0x555559a85960,
regs=0x5555595a80a8, max_depth=<optimized out>, data=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8574
#19 0x000055555604e766 in cselib_expand_value_rtx_1 (orig=0x555559a85960,
evd=0x7fffffffcb10, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2025
#20 0x000055555604e2cb in cselib_expand_value_rtx_1 (orig=0x7ffff33ccb30,
evd=0x7fffffffcb10, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2063
#21 0x000055555604f883 in cselib_expand_value_rtx_cb
(orig=orig@entry=0x7ffff33ccb30, regs_active=regs_active@entry=0x5555595a80a8,
max_depth=max_depth@entry=2147483647, cb=cb@entry=0x555556a33fe0
<vt_expand_loc_callback(rtx, bitmap, int, void*)>,
data=data@entry=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:1873
#22 0x0000555556a33b97 in vt_expand_var_loc_chain
(var=var@entry=0x55555a2ebae0, regs=regs@entry=0x5555595a80a8,
data=data@entry=0x7fffffffce20, pendrecp=pendrecp@entry=0x7fffffffcbf7) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8411
#23 0x0000555556a34482 in vt_expand_loc_callback (x=0x555559a85978,
regs=0x5555595a80a8, max_depth=<optimized out>, data=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8574
#24 0x000055555604e766 in cselib_expand_value_rtx_1 (orig=0x555559a85978,
evd=0x7fffffffcce0, max_depth=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:2025
#25 0x000055555604f883 in cselib_expand_value_rtx_cb
(orig=orig@entry=0x555559a85978, regs_active=regs_active@entry=0x5555595a80a8,
max_depth=max_depth@entry=2147483647, cb=cb@entry=0x555556a33fe0
<vt_expand_loc_callback(rtx, bitmap, int, void*)>,
data=data@entry=0x7fffffffce20) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cselib.cc:1873
#26 0x0000555556a33b97 in vt_expand_var_loc_chain
(var=var@entry=0x55555a2e7190, regs=0x5555595a80a8,
data=data@entry=0x7fffffffce20, pendrecp=pendrecp@entry=0x0) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8411
#27 0x0000555556a34ea4 in vt_expand_1pvar (var=<optimized out>, vars=<optimized
out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8687
#28 emit_note_insn_var_location (varp=varp@entry=0x555559e30300,
data=data@entry=0x7fffffffd020) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:8741
#29 0x0000555556a3c129 in hash_table<variable_hasher, false,
xcallocator>::traverse_noresize<emit_note_data*,
&(emit_note_insn_var_location(variable**, emit_note_data*))> (this=<optimized
out>, argument=0x7fffffffd020) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:9101
#30 hash_table<variable_hasher, false, xcallocator>::traverse<emit_note_data*,
&(emit_note_insn_var_location(variable**, emit_note_data*))> (this=<optimized
out>, argument=0x7fffffffd020) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/hash-table.h:1194
#31 emit_notes_for_changes (insn=insn@entry=0x7ffff343aec0,
where=where@entry=EMIT_NOTE_BEFORE_INSN, vars=<optimized out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:9101
#32 0x0000555556a418bf in emit_notes_in_bb (bb=0x7ffff492c300,
set=0x7fffffffd190) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:9548
#33 vt_emit_notes () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:9594
#34 0x0000555556a43727 in variable_tracking_main_1 () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:10565
#35 0x0000555556a43830 in variable_tracking_main () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:10579
#36 (anonymous namespace)::pass_variable_tracking::execute (this=<optimized
out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/var-tracking.cc:10616
#37 0x00005555564a3f49 in execute_one_pass (pass=pass@entry=0x55555948ce90) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/passes.cc:2659
#38 0x00005555564a4850 in execute_pass_list_1 (pass=0x55555948ce90) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/passes.cc:2768
#39 0x00005555564a4862 in execute_pass_list_1 (pass=0x55555948cd70) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/passes.cc:2769
#40 0x00005555564a4862 in execute_pass_list_1 (pass=0x55555948ad70) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/passes.cc:2769
#41 0x00005555564a488d in execute_pass_list (fn=0x7ffff4b5b680, pass=<optimized
out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/passes.cc:2779
#42 0x0000555556039e50 in cgraph_node::expand (this=0x7ffff4b56bb0) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/context.h:48
#43 cgraph_node::expand (this=0x7ffff4b56bb0) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cgraphunit.cc:1812
#44 0x000055555603bcd9 in expand_all_functions () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cgraphunit.cc:2042
#45 symbol_table::compile (this=0x7ffff7206000) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cgraphunit.cc:2418
#46 0x000055555603e432 in symbol_table::compile (this=0x7ffff7206000) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cgraphunit.cc:2329
#47 symbol_table::finalize_compilation_unit (this=0x7ffff7206000) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/cgraphunit.cc:2607
#48 0x00005555566112fb in compile_file () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/toplev.cc:478
#49 0x0000555555e09278 in do_compile () at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/toplev.cc:2211
#50 toplev::main (this=0x7fffffffd776, argc=<optimized out>, argv=<optimized
out>) at
/usr/src/debug/sys-devel/gcc-16.0.9999/gcc-16.0.9999/gcc/toplev.cc:2374
```
---
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/16/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage.notmp/portage/sys-devel/gcc-16.0.9999/work/gcc-16.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/16
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/16/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/16/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/16/python
--enable-libphobos --enable-languages=c,c++,d,fortran,ada,cobol
--enable-obsolete --enable-secureplt --disable-werror --with-system-zlib
--enable-nls --without-included-gettext --disable-libunwind-exceptions
--enable-checking=yes,extra,rtl --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo Hardened 16.0.9999 p, commit
93f36c1b921e531fd4cdc6aee7af55e1d6eb9d39' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point
--enable-targets=all --enable-offload-defaulted
--enable-offload-targets=nvptx-none --enable-libgomp --disable-libssp
--enable-libada --enable-cet --disable-systemtap --disable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --with-isl
--disable-isl-version-check --enable-default-pie --enable-host-pie
--enable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-gxx-libcxx-include-dir=/usr/include/c++/v1
--with-build-config=bootstrap-cet
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.0.0 20250501 (experimental)
79aa2a283a8d3327ff4d6dca77e81d5b1ac3a01e (Gentoo Hardened 16.0.9999 p, commit
93f36c1b921e531fd4cdc6aee7af55e1d6eb9d39)
```
