https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113120
Bug ID: 113120
Summary: during GIMPLE pass: bitintlower ICE: SIGSEGV with
_BitInt() at -O2
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
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 56926
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56926&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 testcase.c -wrapper valgrind,-q
==23272== Invalid read of size 2
==23272== at 0x2635303: contains_struct_check (tree.h:3757)
==23272== by 0x2635303: gimple_lower_bitint() (gimple-lower-bitint.cc:6585)
==23272== by 0x13C87DA: execute_one_pass(opt_pass*) (passes.cc:2646)
==23272== by 0x13C90CF: execute_pass_list_1(opt_pass*) (passes.cc:2755)
==23272== by 0x13C90E1: execute_pass_list_1(opt_pass*) (passes.cc:2756)
==23272== by 0x13C9108: execute_pass_list(function*, opt_pass*)
(passes.cc:2766)
==23272== by 0xFC9795: expand (cgraphunit.cc:1842)
==23272== by 0xFC9795: cgraph_node::expand() (cgraphunit.cc:1795)
==23272== by 0xFCAADA: expand_all_functions (cgraphunit.cc:2025)
==23272== by 0xFCAADA: symbol_table::compile() [clone .part.0]
(cgraphunit.cc:2399)
==23272== by 0xFCD657: compile (cgraphunit.cc:2312)
==23272== by 0xFCD657: symbol_table::finalize_compilation_unit()
(cgraphunit.cc:2584)
==23272== by 0x150A701: compile_file() (toplev.cc:473)
==23272== by 0xDE58FB: do_compile (toplev.cc:2150)
==23272== by 0xDE58FB: toplev::main(int, char**) (toplev.cc:2306)
==23272== by 0xDE70DA: main (main.cc:39)
==23272== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==23272==
during GIMPLE pass: bitintlower
testcase.c: In function 'bar':
testcase.c:5:1: internal compiler error: Segmentation fault
5 | bar(unsigned _BitInt(1) c, _BitInt(401) d)
| ^~~
0x150a21f crash_signal
/repo/gcc-trunk/gcc/toplev.cc:316
0x2635303 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/repo/gcc-trunk/gcc/tree.h:3757
0x2635303 gimple_lower_bitint
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:6585
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-r14-6806-20231222122934-gcefae511ed7-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-r14-6806-20231222122934-gcefae511ed7-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231222 (experimental) (GCC)
