https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113315
--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 57031 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57031&action=edit probably related testcase, ICEing elsewhere at -O0 Compiler output for testcase3.c: $ x86_64-pc-linux-gnu-gcc testcase3.c during GIMPLE pass: bitintlower0 testcase3.c: In function 'foo': testcase3.c:5:1: internal compiler error: in lower_stmt, at gimple-lower-bitint.cc:5421 5 | foo (void) | ^~~ 0xd7fc87 lower_stmt /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:5421 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.