https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118149
Bug ID: 118149
Summary: [15 regression] ICE when building lsp-plugins-1.2.14
(mmap: Cannot allocate memory in forwprop)
Product: gcc
Version: 15.0
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: ---
Originally reported downstream in gentoo at https://bugs.gentoo.org/946696.
```
$ g++ -c generic.ii -O2 -march=znver2
during GIMPLE pass: forwprop
In file included from main/generic/generic.cpp:70:
/var/tmp/portage/media-libs/lsp-plugins-1.2.14/work/lsp-plugins/modules/lsp-dsp-lib/include/private/dsp/arch/generic/fastconv.h:
In function ‘void lsp::generic::fastconv_parse(float*, const float*, size_t)’:
/var/tmp/portage/media-libs/lsp-plugins-1.2.14/work/lsp-plugins/modules/lsp-dsp-lib/include/private/dsp/arch/generic/fastconv.h:33:14:
internal compiler error: in operator[], at vec.h:910
33 | void fastconv_parse(float *dst, const float *src, size_t rank)
| ^~~~~~~~~~~~~~
mmap: Cannot allocate memory
0x7e3e27b59746 __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
0x7e3e27b597f6 __libc_start_main_impl
../csu/libc-start.c:360
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.
```
---
```
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/15/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-15.0.9999/work/gcc-15.0.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/15
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/15/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/15/python
--enable-objc-gc --enable-languages=c,c++,d,go,objc,obj-c++,fortran,ada,m2,rust
--enable-obsolete --enable-secureplt --disable-werror --with-system-zlib
--enable-nls --without-included-gettext --disable-libunwind-exceptions
--enable-checking=yes,extra,rtl --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo Hardened 15.0.9999 p, commit
bf22395e91b68cb0cb464f72e08949ddd7ded9bf' --with-gcc-major-version-only
--enable-libstdcxx-time --enable-lto --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-multilib --with-multilib-list=m32,m64 --disable-fixed-point
--enable-targets=all --enable-offload-defaulted
--enable-offload-targets=nvptx-none --enable-libgomp --disable-libssp
--enable-libada --disable-cet --disable-systemtap --enable-valgrind-annotations
--disable-vtable-verify --disable-libvtv --with-zstd --with-isl
--disable-isl-version-check --enable-default-pie --enable-host-pie
--enable-host-bind-now --enable-default-ssp --disable-fixincludes
--with-build-config='bootstrap-O3 bootstrap-lto'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241219 (experimental)
23df3c3a4aa33a08e82ac8b98d7ff6e7f1b65b63 (Gentoo Hardened 15.0.9999 p, commit
bf22395e91b68cb0cb464f72e08949ddd7ded9bf)
```
