[Bug c/126684] <source>:13:1: internal compiler error: in vec_safe_grow_cleared, at vec.h:773 since 13.1

"rguenth at gcc dot gnu.org via Gcc-bugs" <[email protected]> Thu, 06 Aug 2026 14:03:21 +0000

Newsgroups	gmane.comp.gcc.bugs
Message-ID	<[email protected]/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126684

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-08-06
             Blocks|                            |101057
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  The error recovery path

421       /* Perform IL validation and if any error is found abort compilation
422          of this function by zapping its body.  */
423       if ((cfun->curr_properties & PROP_cfg)
424           && verify_gimple_in_cfg (cfun, false, false))
425         init_empty_tree_cfg ();

doesn't work when a CFG is already present.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101057
[Bug 101057] [meta-bug] [gimplefe] GIMPLE frontend issues