https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107244
Bug ID: 107244 Summary: error: invalid position or size in ‘bit_insert_expr’ Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- Created attachment 53699 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53699&action=edit C source code For the attached C code, recent gcc trunk does this: $ /home/dcb/gcc/results/bin/gcc -c -w -O2 bug856.c 2>&1 | more apply.c: In function ‘unleash_all’: apply.c:582:1: error: invalid position or size in ‘bit_insert_expr’ _ifc__16 = BIT_INSERT_EXPR <_ifc__2, 0, 0xffffffffffffffffffffffffffffffab (1 bi ts)>; during GIMPLE pass: ifcvt apply.c:582:1: internal compiler error: verify_gimple failed