https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109521
Bug ID: 109521
Summary: Checking ICE (canonical types differ for identical
types)
Product: gcc
Version: 13.0
URL: https://bugs.gentoo.org/904339
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Build: x86_64-pc-linux-gnu
Created attachment 54865
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54865&action=edit
optimise.ii.orig.xz
Had this when building form-4.3.0. Originally reported downstream in Gentoo at
https://bugs.gentoo.org/904339.
To trigger this, I had to use -U_GLIBCXX_ASSERTIONS as I have it enabled by
default for my GCC (Gentoo has it enabled by default for hardened, but not all
setups). Obviously this doesn't matter once preprocessed though.
Needs a checking build.
```
$ g++ -DHAVE_CONFIG_H -I. -I.. -O2 -Wall -Wextra -Wpadded
-Wno-misleading-indentation -Wno-stringop-overflow -U_GLIBCXX_ASSERTIONS -c
sources/optimize.cc
‘
during GIMPLE pass: uninit
In function ‘void find_Horner_MCTS()’:
canonical types differ for identical types ‘UBYTE [7]’ {aka ‘unsigned char
[7]’} and ‘unsigned char [7]’
2208 | void find_Horner_MCTS () {
| ^~~~~~~~~~~~~~~~
0x68ea0a comptypes(tree_node*, tree_node*, int)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/cp/typeck.cc:1710
0x22768b9 cxx_types_compatible_p(tree_node*, tree_node*)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/cp/cp-objcp-common.cc:130
0x11ed84a c_fold_indirect_ref_for_warn
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/c-family/c-pretty-print.cc:1851
0x11edf79 c_fold_indirect_ref_for_warn
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/c-family/c-pretty-print.cc:1918
0x11ee249 print_mem_ref
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/c-family/c-pretty-print.cc:1981
0x7b8b72 expr_to_string(tree_node*)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/cp/error.cc:3315
0x21adbb0 cp_printer
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/cp/error.cc:4484
0x1a71e85 pp_format(pretty_printer*, text_info*)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/pretty-print.cc:1475
0x1a710c3 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/diagnostic.cc:1592
0x1aef8c9 diagnostic_impl
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/diagnostic.cc:1756
0x1aef8c9 warning_at(unsigned int, int, char const*, ...)
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/diagnostic.cc:1893
0x9eda7e maybe_warn_operand
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/tree-ssa-uninit.cc:731
0x1d83413 warn_uninitialized_vars
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/tree-ssa-uninit.cc:1098
0x22271fa execute_late_warn_uninitialized
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/tree-ssa-uninit.cc:1406
0x22271fa execute
/usr/src/debug/sys-devel/gcc-13.0.1_pre20230409-r4/gcc-13-20230409/gcc/tree-ssa-uninit.cc:1451
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```
Reduction in progress.
