https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101160
Bug ID: 101160
Summary: [12 Regression] ICE in df_word_lr_local_compute, at
df-problems.c:2962 since r12-1702-g7232f7c4c2d72743
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
The following fails:
$ g++ /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/abi/param2.C -O2
during RTL pass: subreg3
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/abi/param2.C: In function ‘S
foo(S)’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/abi/param2.C:12:1: internal
compiler error: in df_word_lr_local_compute, at df-problems.c:2962
12 | }
| ^
0x77484b df_word_lr_local_compute
/home/marxin/Programming/gcc/gcc/df-problems.c:2962
0xd3c042 df_analyze_problem(dataflow*, bitmap_head*, int*, int)
/home/marxin/Programming/gcc/gcc/df-core.c:1171
0xd3cf41 df_analyze_1
/home/marxin/Programming/gcc/gcc/df-core.c:1228
0x1bc3045 init_dce
/home/marxin/Programming/gcc/gcc/dce.c:763
0x1bc57e1 run_word_dce()
/home/marxin/Programming/gcc/gcc/dce.c:1213
0x1cb93d2 decompose_multiword_subregs
/home/marxin/Programming/gcc/gcc/lower-subreg.c:1516
0x1cba94d execute
/home/marxin/Programming/gcc/gcc/lower-subreg.c:1816
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.
