https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112444
Bug ID: 112444
Summary: [14 regression] ICE when buliding libqmi (internal
compiler error: tree check: expected class ‘type’,
have ‘exceptional’ (error_mark) in
useless_type_conversion_p, at gimple-expr.cc:85)
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: sjames at gcc dot gnu.org
Target Milestone: ---
Created attachment 56534
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56534&action=edit
meson-generated_.._qmi-pbm.c.i.xz
Originally reported downstream in Gentoo by Toralf Förster at
https://bugs.gentoo.org/917037.
Seems to need -ftrivial-auto-var-init=zero.
```
# x86_64-pc-linux-gnu-gcc -Isrc/libqmi-glib/generated/libqmi-glib-generated.a.p
-Isrc/libqmi-glib/generated -I../libqmi-1.32.4/src/libqmi-glib/generated -I.
-I../libqmi-1.32.4 -Isrc/libqmi-glib -I../libqmi-1.32.4/src/libqmi-glib
-I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include
-I/usr/lib64/libffi/include -I/usr/include/libmount -I/usr/include/blkid
-I/usr/include/libqrtr-glib -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64
-Wall -Winvalid-pch -Wextra -std=gnu89 -DHAVE_CONFIG_H -Wno-unused-parameter
-Wno-cast-function-type -Wno-packed -O3 -pipe -march=native
-fno-diagnostics-color -fPIC -pthread
-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_56
-DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_56
-DGLIB_DISABLE_DEPRECATION_WARNINGS -DLIBQMI_GLIB_COMPILATION
'-DG_LOG_DOMAIN="Qmi"' -Wno-unused-function -MD -MQ
src/libqmi-glib/generated/libqmi-glib-generated.a.p/meson-generated_.._qmi-pbm.c.o
-MF
src/libqmi-glib/generated/libqmi-glib-generated.a.p/meson-generated_.._qmi-pbm.c.o.d
-o
src/libqmi-glib/generated/libqmi-glib-generated.a.p/meson-generated_.._qmi-pbm.c.o
-c src/libqmi-glib/generated/qmi-pbm.c -ftrivial-auto-var-init=zero
during GIMPLE pass: fre
src/libqmi-glib/generated/qmi-pbm.c: In function
‘message_get_all_capabilities_get_tlv_printable’:
src/libqmi-glib/generated/qmi-pbm.c:3934:1: internal compiler error: tree
check: expected class ‘type’, have ‘exceptional’ (error_mark) in
useless_type_conversion_p, at gimple-expr.cc:85
3934 | message_get_all_capabilities_get_tlv_printable (
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x560e0a0b792f tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/tree.cc:8999
0x560e0924e52a tree_class_check(tree_node*, tree_code_class, char const*, int,
char const*)
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/tree.h:3753
0x560e0924e52a useless_type_conversion_p(tree_node*, tree_node*)
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/gimple-expr.cc:85
0x560e0a9c8534 verify_gimple_assign_single
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/tree-cfg.cc:4593
0x560e0aa84d20 verify_gimple_in_cfg(function*, bool, bool)
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/tree-cfg.cc:5582
0x560e0a8f7f9c execute_function_todo
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/passes.cc:2088
0x560e0a8f7f9c do_per_function
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/passes.cc:1687
0x560e0a8f7f9c execute_todo
/usr/src/debug/sys-devel/gcc-14.0.0_pre20231105/gcc-14-20231105/gcc/passes.cc:2142
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 -c meson-generated_.._qmi-pbm.c.i -O3 -ftrivial-auto-var-init=zero' is
enough for me to reproduce.
