https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125897
Bug ID: 125897
Summary: ice in value_on_edge, at tree-vrp.cc:1029
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
Created attachment 64793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64793&action=edit
C++ source code
The attached C++ code does this with recent g++ trunk:
$ /home/dcb42/gcc/results/bin/g++ -w -c -O2 bug1220.cc
during GIMPLE pass: evrp
0005_0043.cc: In function ‘int* sub(int)’:
0005_0043.cc:137:1: internal compiler error: in value_on_edge, at
tree-vrp.cc:1029
0x2333ec7 internal_error
/home/dcb42/gcc/working/gcc/../../trunk/gcc/diagnostic-global-context.cc:787
0x233d70b fancy_abort
/home/dcb42/gcc/working/gcc/../../trunk/gcc/diagnostics/context.cc:1813
0x1338ed9 value_on_edge
/home/dcb42/gcc/working/gcc/../../trunk/gcc/tree-vrp.cc:1029
0x11c9e7a propagate_into_phi_args
/home/dcb42/gcc/working/gcc/../../trunk/gcc/tree-ssa-propagate.cc:741
The problem first seems to occur sometime between g:5d14cb6417055829
and g:57269888666b03da
Compiler is:
foundBugs $ /home/dcb42/gcc/results/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/dcb42/gcc/results/bin/g++
COLLECT_LTO_WRAPPER=/home/dcb42/gcc/results.20260618.ubsan/libexec/gcc/x86_64-pc-linux-gnu/17.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../trunk/configure
--prefix=/home/dcb42/gcc/results.20260618.ubsan --disable-bootstrap
--disable-doc --disable-multilib --with-build-config=bootstrap-ubsan
--with-pkgversion=f333df2d55618c50 --enable-checking=yes
--enable-languages=c,c++,fortran
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 17.0.0 20260618 (experimental) (f333df2d55618c50)
foundBugs $
