https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113316
Bug ID: 113316
Summary: during GIMPLE pass: bitintlower ICE: SIGSEGV in
var_to_partition (tree-ssa-live.h:163) at -O with
uninitialized _BitInt() function argument
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 57030
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57030&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c -wrapper valgrind,-q
==9456== Invalid read of size 8
==9456== at 0x2661471: var_to_partition (tree-ssa-live.h:163)
==9456== by 0x2661471: (anonymous
namespace)::bitint_large_huge::lower_call(tree_node*, gimple*)
(gimple-lower-bitint.cc:5120)
==9456== by 0x266BF59: gimple_lower_bitint() (gimple-lower-bitint.cc:6514)
==9456== by 0x13CA4BA: execute_one_pass(opt_pass*) (passes.cc:2646)
==9456== by 0x13CADAF: execute_pass_list_1(opt_pass*) (passes.cc:2755)
==9456== by 0x13CADC1: execute_pass_list_1(opt_pass*) (passes.cc:2756)
==9456== by 0x13CADE8: execute_pass_list(function*, opt_pass*)
(passes.cc:2766)
==9456== by 0xFCB105: expand (cgraphunit.cc:1842)
==9456== by 0xFCB105: cgraph_node::expand() (cgraphunit.cc:1795)
==9456== by 0xFCC44A: expand_all_functions (cgraphunit.cc:2025)
==9456== by 0xFCC44A: symbol_table::compile() [clone .part.0]
(cgraphunit.cc:2399)
==9456== by 0xFCEFC7: compile (cgraphunit.cc:2312)
==9456== by 0xFCEFC7: symbol_table::finalize_compilation_unit()
(cgraphunit.cc:2584)
==9456== by 0x150C3E1: compile_file() (toplev.cc:473)
==9456== by 0xDE691B: do_compile (toplev.cc:2151)
==9456== by 0xDE691B: toplev::main(int, char**) (toplev.cc:2307)
==9456== by 0xDE80FA: main (main.cc:39)
==9456== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==9456==
during GIMPLE pass: bitintlower
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: Segmentation fault
4 | foo (void)
| ^~~
0x150beff crash_signal
/repo/gcc-trunk/gcc/toplev.cc:316
0x2661471 var_to_partition(_var_map*, tree_node*)
/repo/gcc-trunk/gcc/tree-ssa-live.h:163
0x2661471 lower_call
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:5120
0x266bf59 gimple_lower_bitint
/repo/gcc-trunk/gcc/gimple-lower-bitint.cc:6514
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.
