https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117712
Bug ID: 117712
Summary: ICE when building x265: internal compiler error: in
expand_fix, at optabs.cc:5936
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: csfore at posteo dot net
Target Milestone: ---
Created attachment 59646
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59646&action=edit
original preprocessed file
Notes:
* -ffast-math is required (appended by upstream)
* for the non-reduced file, -std=gnu++98 is required
```
$ g++ -O2 -ffast-math analysis.cpp.ii
during RTL pass: ce1
analysis.cpp.ii: In function ‘void compressInterCU_rd5_6(int)’:
analysis.cpp.ii:7:1: internal compiler error: in expand_fix, at optabs.cc:5936
7 | }
| ^
0x276817f diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, std::__va_list*,
diagnostic_t)
???:0
0x27816bf internal_error(char const*, ...)
???:0
0x7863c7 fancy_abort(char const*, int, char const*)
???:0
0x1280687 expand_fix(rtx_def*, rtx_def*, int)
???:0
0xee00bb force_operand(rtx_def*, rtx_def*)
???:0
0xedff37 force_operand(rtx_def*, rtx_def*)
???:0
0xea4517 copy_to_mode_reg(machine_mode, rtx_def*)
???:0
0x1273a5f maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
???:0
0x1270207 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
???:0
0x1272c03 emit_conditional_move(rtx_def*, rtx_comparison, rtx_def*, rtx_def*,
machine_mode, int)
???:0
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 -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/armv7a-unknown-linux-gnueabihf/15/lto-wrapper
Target: armv7a-unknown-linux-gnueabihf
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.0_pre20241117-r2/work/gcc-15-20241117/configure
--host=armv7a-unknown-linux-gnueabihf --build=armv7a-unknown-linux-gnueabihf
--prefix=/usr --bindir=/usr/armv7a-unknown-linux-gnueabihf/gcc-bin/15
--includedir=/usr/lib/gcc/armv7a-unknown-linux-gnueabihf/15/include
--datadir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15
--mandir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/man
--infodir=/usr/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/info
--with-gxx-include-dir=/usr/lib/gcc/armv7a-unknown-linux-gnueabihf/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/armv7a-unknown-linux-gnueabihf/15/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo
15.0.0_pre20241117-r2 p26' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--disable-multilib --disable-fixed-point --with-float=hard --with-arch=armv7-a
--with-float=hard --with-fpu=vfpv3-d16 --enable-libgomp --disable-libssp
--disable-libada --disable-systemtap --disable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --without-isl
--enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --disable-fixincludes
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241117 (experimental) (Gentoo 15.0.0_pre20241117-r2 p26)
```
Originally reported downstream in Gentoo at:
https://bugs.gentoo.org/943738
