https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110895
Bug ID: 110895
Summary: [14 regression] ICE compiling
gcc.c-torture/compile/pr33133.c after
r14-2925-g2bae476b511dc4
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
g:2bae476b511dc441bf61da8a49cca655575e7dd6, r14-2925-g2bae476b511dc4
make -k check-gcc RUNTESTFLAGS="compile.exp=gcc.c-torture/compile/pr33133.c"
FAIL: gcc.c-torture/compile/pr33133.c -O2 (internal compiler error:
Segmentation fault signal terminated program cc1)
FAIL: gcc.c-torture/compile/pr33133.c -O2 (test for excess errors)
FAIL: gcc.c-torture/compile/pr33133.c -Os (internal compiler error:
Segmentation fault signal terminated program cc1)
FAIL: gcc.c-torture/compile/pr33133.c -Os (test for excess errors)
FAIL: gcc.c-torture/compile/pr33133.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (internal compiler error: Segmentation fault signal
terminated program cc1)
FAIL: gcc.c-torture/compile/pr33133.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (test for excess errors)
# of expected passes 5
# of unexpected failures 6
spawn -ignore SIGHUP /home/seurer/gcc/git/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/git/build/gcc-test/gcc/ -fdiagnostics-plain-output -O2 -flto
-fno-use-linker-plugin -flto-partition=none -w -c -o pr33133.o
/home/seurer/gcc/git/gcc-test/gcc/testsuite/gcc.c-torture/compile/pr33133.c
xgcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
compiler exited with status 1
FAIL: gcc.c-torture/compile/pr33133.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (internal compiler error: Segmentation fault signal
terminated program cc1)
Hmmm. No traceback.
commit 2bae476b511dc441bf61da8a49cca655575e7dd6 (HEAD, refs/bisect/bad)
Author: Andrew Pinski <apin...@marvell.com>
Date: Sat Jul 29 13:00:04 2023 -0700
Move `~X & X` and `~X | X` over to use bitwise_inverted_equal_p
So, running it from gdb I see:
#0 0x0000000010e3dab0 in operand_compare::verify_hash_value (this=<error
reading variable: Cannot access memory at address 0x7ffffbfffff8>,
arg0=<error reading variable: Cannot access memory at address
0x7ffffbfffff0>, arg1=<error reading variable: Cannot access memory at address
0x7ffffbffffe8>,
flags=<error reading variable: Cannot access memory at address
0x7ffffbffffe4>, ret=<error reading variable: Cannot access memory at address
0x7ffffbffffd8>)
at /home/seurer/gcc/git/gcc-test/gcc/fold-const.cc:4068
#1 0x0000000010e35c60 in operand_compare::operand_equal_p (this=0x13d16e38
<default_compare_instance>, arg0=0x7ffff5c21170, arg1=0x7ffff5c21680, flags=16)
at /home/seurer/gcc/git/gcc-test/gcc/fold-const.cc:3090
#2 0x0000000010e3db40 in operand_compare::verify_hash_value (this=0x13d16e38
<default_compare_instance>, arg0=0x7ffff5c21170, arg1=0x7ffff5c21680, flags=0,
ret=0x7ffffc00022e)
at /home/seurer/gcc/git/gcc-test/gcc/fold-const.cc:4074
#3 0x0000000010e35c60 in operand_compare::operand_equal_p (this=0x13d16e38
<default_compare_instance>, arg0=0x7ffff5c21170, arg1=0x7ffff5c21680, flags=0)
at /home/seurer/gcc/git/gcc-test/gcc/fold-const.cc:3090
#4 0x0000000010e3dd34 in operand_equal_p (arg0=0x7ffff5c21170,
arg1=0x7ffff5c21680, flags=0) at
/home/seurer/gcc/git/gcc-test/gcc/fold-const.cc:4105
#5 0x0000000012ca6368 in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:284
#6 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21a28, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#7 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#8 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21a28, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#9 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#10 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21a28, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#11 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#12 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21a28, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#13 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#14 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21a28, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
#15 0x0000000012ca642c in gimple_bitwise_inverted_equal_p
(expr1=0x7ffff5c21170, expr2=0x7ffff5c21680, valueize=0x119a59f8
<rpo_vn_valueize(tree_node*)>)
at /home/seurer/gcc/git/gcc-test/gcc/gimple-match-head.cc:293
...etc... for at least hundreds more
Looks like an infinite recursion.
