https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112807
Bug ID: 112807
Summary: ICE: SIGSEGV in contains_struct_check (tree.h:3747)
with _BitInt() at -O1 and above
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 56751
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56751&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c -wrapper valgrind,-q
==11799== Invalid read of size 2
==11799== at 0x253EF3F: contains_struct_check (tree.h:3747)
==11799== by 0x253EF3F: (anonymous
namespace)::bitint_large_huge::lower_addsub_overflow(tree_node*, gimple*)
(gimple-lower-bitint.cc:3951)
==11799== by 0x2543129: (anonymous
namespace)::bitint_large_huge::lower_call(tree_node*, gimple*)
(gimple-lower-bitint.cc:5039)
==11799== by 0x254D626: gimple_lower_bitint() (gimple-lower-bitint.cc:6386)
==11799== by 0x13A2D3A: execute_one_pass(opt_pass*) (passes.cc:2641)
==11799== by 0x13A361F: execute_pass_list_1(opt_pass*) (passes.cc:2750)
==11799== by 0x13A3631: execute_pass_list_1(opt_pass*) (passes.cc:2751)
==11799== by 0x13A3658: execute_pass_list(function*, opt_pass*)
(passes.cc:2761)
==11799== by 0xFB0755: expand (cgraphunit.cc:1841)
==11799== by 0xFB0755: cgraph_node::expand() (cgraphunit.cc:1794)
==11799== by 0xFB1A9A: expand_all_functions (cgraphunit.cc:2024)
==11799== by 0xFB1A9A: symbol_table::compile() [clone .part.0]
(cgraphunit.cc:2398)
==11799== by 0xFB4607: compile (cgraphunit.cc:2311)
==11799== by 0xFB4607: symbol_table::finalize_compilation_unit()
(cgraphunit.cc:2583)
==11799== by 0x14E5F21: compile_file() (toplev.cc:473)
==11799== by 0xDD221B: do_compile (toplev.cc:2150)
==11799== by 0xDD221B: toplev::main(int, char**) (toplev.cc:2306)
==11799== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==11799==
during GIMPLE pass: bitintlower
testcase.c: In function 'foo':
testcase.c:2:1: internal compiler error: Segmentation fault
2 | foo (unsigned a, _BitInt (2) b, _BitInt (256) c)
| ^~~
0x14e5a3f crash_signal
/repo/gcc-trunk/gcc/toplev.cc:316
0x253ef3f contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/repo/gcc-trunk/gcc/tree.h:3747
0x253ef3f lower_addsub_overflow
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:3951
0x2543129 lower_call
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:5039
0x254d626 gimple_lower_bitint
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:6386
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-r14-6048-20231201170246-g6563d6767ed-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-r14-6048-20231201170246-g6563d6767ed-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231201 (experimental) (GCC)
