[Bug c++/105946] [12/13 Regression] ICE in maybe_warn_pass_by_reference, at tree-ssa-uninit.cc:843
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105946 --- Comment #2 from CVS Commits --- The master branch has been updated by Richard Biener : https://gcc.gnu.org/g:e07a876c07601e1f3a27420f7d055d20193c362c commit r13-1086-ge07a876c07601e1f3a27420f7d055d20193c362c Author: Richard Biener Date: Tue Jun 14 11:10:13 2022 +0200 tree-optimization/105946 - avoid accessing excess args from uninit diag uninit diagnostics uses passing via reference and access attributes but that iterates over function type arguments which can in some cases appearantly outrun the actual arguments leading to ICEs. The following simply ignores not present arguments. 2022-06-14 Richard Biener PR tree-optimization/105946 * tree-ssa-uninit.cc (maybe_warn_pass_by_reference): Do not look at arguments not specified in the function call.
[Bug c++/105946] [12/13 Regression] ICE in maybe_warn_pass_by_reference, at tree-ssa-uninit.cc:843
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105946 Richard Biener changed: What|Removed |Added Last reconfirmed||2022-06-14 Priority|P3 |P2 Status|UNCONFIRMED |ASSIGNED Ever confirmed|0 |1 Keywords||needs-reduction Target Milestone|--- |12.2 Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org --- Comment #1 from Richard Biener --- Confirmed. (gdb) p debug_gimple_stmt (stmt) # .MEM_8 = VDEF <.MEM_7(D)> _2 = std::__new_allocator >::allocate (__n_1(D), 0B); 842 tree arg = gimple_call_arg (stmt, argno - 1); (gdb) p argno $2 = 3 (gdb) p debug_generic_expr (fntype) struct vector * __new_allocator:: (struct __new_allocator *, size_type, const void *) so the number of actual arguments does not match the function type of the call. I have a simple patch.
