https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116922
Bug ID: 116922
Summary: [12/13/14/15 Regression] ICE: in op_iter_init, at
ssa-iterators.h:604 with -Ofast
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 59247
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59247&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -Ofast testcase.c -Wno-psabi
during GIMPLE pass: backprop
testcase.c: In function 'foo':
testcase.c:5:1: internal compiler error: in op_iter_init, at
ssa-iterators.h:604
5 | foo (int c, V v, V *r)
| ^~~
0x2c45ffe internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:517
0xe7b953 fancy_abort(char const*, int, char const*)
/repo/gcc-trunk/gcc/diagnostic.cc:1570
0x8aed28 op_iter_init(ssa_op_iter*, gimple*, int)
/repo/gcc-trunk/gcc/ssa-iterators.h:604
0x8af96b op_iter_init(ssa_op_iter*, gimple*, int)
/repo/gcc-trunk/gcc/tree.h:3779
0x8af96b op_iter_init_tree(ssa_op_iter*, gimple*, int)
/repo/gcc-trunk/gcc/ssa-iterators.h:670
0x8af96b release_defs(gimple*)
/repo/gcc-trunk/gcc/tree-ssanames.cc:869
0x2a34d2d remove_unused_var
/repo/gcc-trunk/gcc/gimple-ssa-backprop.cc:667
0x2a34d2d execute
/repo/gcc-trunk/gcc/gimple-ssa-backprop.cc:925
0x2a34d2d execute
/repo/gcc-trunk/gcc/gimple-ssa-backprop.cc:962
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r15-3987-20241001125221-g60fa7f51c84-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r15-3987-20241001125221-g60fa7f51c84-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20241001 (experimental) (GCC)
