https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96734
Natanael Copa <ncopa at alpinelinux dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ncopa at alpinelinux dot org
--- Comment #7 from Natanael Copa <ncopa at alpinelinux dot org> ---
I was able to reproduce using latest commit from gcc 10 branch:
/home/ncopa/aports/main/gcc/src/build/./prev-gcc/xg++
-B/home/ncopa/aports/main/gcc/src/build/./prev-gcc/
-B/usr/mips64-alpine-linux-musl/bin/ -nostdinc++
-B/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/src/.libs
-B/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/libsupc++/.libs
-I/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/include/mips64-alpine-linux-musl
-I/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/include
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/libstdc++-v3/libsupc++
-L/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/src/.libs
-L/home/ncopa/aports/main/gcc/src/build/prev-mips64-alpine-linux-musl/libstdc++-v3/libsupc++/.libs
-fno-PIE -c -DIN_GCC_FRONTEND -g -O2 -fno-checking -gtoggle -DIN_GCC
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -DHAVE_CONFIG_H -I. -Icp
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cp
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/../include
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/../libcpp/include
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/../libdecnumber
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/../libdecnumber/dpd
-I../libdecnumber
-I/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/../libbacktrace -Os
-fomit-frame-pointer -o cp/method.o -MT cp/method.o -MMD -MP -MF
cp/.deps/method.TPo /home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cp/method.c
during IPA pass: sra
In file included from
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cp/method.c:3199:
./gt-cp-method.h:36:2: internal compiler error: Segmentation fault
36 | };
| ^
0x120807513 crash_signal
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/toplev.c:328
0x1204210f5 cgraph_edge::redirect_callee(cgraph_node*)
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cgraph.c:1374
0x1204340c3 cgraph_edge::redirect_callee_duplicating_thunks(cgraph_node*)
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cgraphclones.c:262
0x120434557 cgraph_node::create_clone(tree_node*, profile_count, bool,
vec<cgraph_edge*, va_heap, vl_ptr>, bool, cgraph_node*, ipa_param_adjustments*,
char const*)
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cgraphclones.c:427
0x12043497b cgraph_node::create_virtual_clone(vec<cgraph_edge*, va_heap,
vl_ptr>, vec<ipa_replace_map*, va_gc, vl_embed>*, ipa_param_adjustments*, char
const*, unsigned int)
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/cgraphclones.c:613
0x1205ee357 process_isra_node_results
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/ipa-sra.c:3811
0x1205ee357 ipa_sra_analysis
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/ipa-sra.c:4047
0x1205ee357 execute
/home/ncopa/aports/main/gcc/src/gcc-10.2.1/gcc/ipa-sra.c:4099
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make: *** [Makefile:1117: cp/method.o] Error 1
Withs some help from Ariadne we figured out that
it passes with -O1
it fails with -O2 (or -Os)
it fails with -O1 -fipa-sra -fpartial-inlining
it fails with -Og -fipa-sra -fpartial-inlining
it passes with -Og -fipa-sra
it passes with -Og -fpartial-inlining
it passes with -O2 and either -fnoipa-sra or -fnopartial-inlining
it passes with -fipa-sra -fpartial-inlining
So it seems that it is some -Og optimization in combination with -fipa-sra
-fpartial-inlining triggers it. I have not been able to pinpoint any of the
documented -O1 or -Og optimization flags.
It fails with:
-Og -fipa-sra -fpartial-inlining -fno-combine-stack-adjustments
-fno-compare-elim -fno-cprop-registers -fno-defer-pop -fno-ipa-profile
-fno-ipa-pure-const -fno-ipa-reference -fno-ipa-reference-addressable
-fno-merge-constants -fno-omit-frame-pointer -fno-reorder-blocks
-fno-shrink-wrap -fno-split-wide-types -fno-tree-builtin-call-dce -fno-tree-ccp
-fno-tree-ch -fno-tree-coalesce-vars -fno-tree-copy-prop -fno-tree-dce
-fno-tree-dominator-opts -fno-tree-fre -fno-tree-sink -fno-tree-slsr
-fno-tree-ter
