https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112880
Bug ID: 112880
Summary: ICE: in smallest_mode_for_size, at stor-layout.cc:356
with __builtin_mul_overflow() of _BitInt(1024)
Product: gcc
Version: 14.0
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
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 56812
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56812&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c
during GIMPLE pass: cddce
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in smallest_mode_for_size, at
stor-layout.cc:356
7 | }
| ^
0x14dedcf smallest_mode_for_size(poly_int<1u, unsigned long>, mode_class)
/repo/gcc-trunk/gcc/stor-layout.cc:356
0x14e3715 smallest_int_mode_for_size(poly_int<1u, unsigned long>)
/repo/gcc-trunk/gcc/machmode.h:916
0x14e3715 layout_type(tree_node*)
/repo/gcc-trunk/gcc/stor-layout.cc:2405
0x1809acc build_nonstandard_integer_type(unsigned long, int)
/repo/gcc-trunk/gcc/tree.cc:7129
0x16251ec maybe_optimize_arith_overflow
/repo/gcc-trunk/gcc/tree-ssa-dce.cc:1246
0x16271b1 eliminate_unnecessary_stmts
/repo/gcc-trunk/gcc/tree-ssa-dce.cc:1491
0x16271b1 perform_tree_ssa_dce
/repo/gcc-trunk/gcc/tree-ssa-dce.cc:1973
0x1627785 tree_ssa_cd_dce
/repo/gcc-trunk/gcc/tree-ssa-dce.cc:2014
0x1627785 execute
/repo/gcc-trunk/gcc/tree-ssa-dce.cc:2097
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-r14-6210-20231206095912-ge44ed92dbbe-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/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 --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-6210-20231206095912-ge44ed92dbbe-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231206 (experimental) (GCC)
