https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109834
Bug ID: 109834
Summary: internal compiler error: tree check: expected class
‘type’, have ‘exceptional’ (ssa_name) in
gimple_simplify_191 when building harfbuzz
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 55066
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55066&action=edit
hb-subset.cc.ii
```
FAILED: src/libharfbuzz-subset.so.0.60730.0.p/hb-subset.cc.o
aarch64-unknown-linux-gnu-g++ -Isrc/libharfbuzz-subset.so.0.60730.0.p -Isrc
-I../harfbuzz-7.3.0/src -I. -I../harfbuzz-7.3.0 -fdiagnostics-color=always
-D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++11 -fno-exceptions -fno-rtti
-fno-exceptions -fno-rtti -fno-threadsafe-statics -fvisibility-inlines-hidden
-DU_DISABLE_RENAMING=1 -DHAVE_CONFIG_H -O3 -pipe -mcpu=native -DHB_NDEBUG -fPIC
-Wno-non-virtual-dtor -MD -MQ
src/libharfbuzz-subset.so.0.60730.0.p/hb-subset.cc.o -MF
src/libharfbuzz-subset.so.0.60730.0.p/hb-subset.cc.o.d -o
src/libharfbuzz-subset.so.0.60730.0.p/hb-subset.cc.o -c
../harfbuzz-7.3.0/src/hb-subset.cc
during GIMPLE pass: forwprop
../harfbuzz-7.3.0/src/hb-subset.cc: In member function ‘unsigned int
OT::Layout::GPOS_impl::ValueFormat::get_len() const’:
../harfbuzz-7.3.0/src/hb-subset.cc:639:1: internal compiler error: tree check:
expected class ‘type’, have ‘exceptional’ (ssa_name) in gimple_simplify_191, at
gimple-match-2.cc:1184
639 | }
| ^
0x72bcb7 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/tree.cc:8949
0x224af97 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/tree.h:3663
0x224af97 gimple_simplify_191(gimple_match_op*, gimple**, tree_node*
(*)(tree_node*), tree_node*, tree_node**, combined_fn, combined_fn)
/usr/src/debug/sys-devel/gcc-14.0.0.9999/build/gcc/gimple-match-2.cc:1184
0x179e3d7 gimple_simplify_CFN_BUILT_IN_POPCOUNT(gimple_match_op*, gimple**,
tree_node* (*)(tree_node*), code_helper, tree_node*, tree_node*)
/usr/src/debug/sys-devel/gcc-14.0.0.9999/build/gcc/gimple-match-8.cc:5618
0x186dd1b gimple_resimplify1
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/gimple-match-exports.cc:890
0x186e71f gimple_simplify(gimple*, gimple_match_op*, gimple**, tree_node*
(*)(tree_node*), tree_node* (*)(tree_node*))
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/gimple-match-exports.cc:834
0xdff7e3 fold_stmt_1
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/gimple-fold.cc:6251
0x134facb execute
/usr/src/debug/sys-devel/gcc-14.0.0.9999/gcc-14.0.0.9999/gcc/tree-ssa-forwprop.cc:3919
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.
```
```
gcc (Gentoo 14.0.0.9999 p, commit 29d805847dc870c92f705ed9c5e7eac955c7e7d4)
14.0.0 20230512 (experimental) f52bf590e3336979ee47658d74a8478e3234da9b
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
```
I can reproduce it with `aarch64-unknown-linux-gnu-g++ -std=c++11 -c
hb-subset.cc.ii -O2`.
I've got a bunch of these and just picked Harfbuzz at random.
