https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112781
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Eric Botcazou <ebotca...@gcc.gnu.org>: https://gcc.gnu.org/g:275de3505e6c5b81bb8060acc5194dac8f5732b5 commit r13-8203-g275de3505e6c5b81bb8060acc5194dac8f5732b5 Author: Eric Botcazou <ebotca...@adacore.com> Date: Tue Jan 9 10:46:23 2024 +0100 Fix internal error on function call returning extension of limited interface This is a regression present on the mainline and 13 branch, in the form of a series of internal errors (3) on a function call returning the extension of a limited interface. This is only a partial fix for the first two assertion failures; the third one is the most problematic and will be dealt with separately. The first issue is in Instantiate_Type, where we use Base_Type in a specific case to compute the ancestor of a derived type, which will later trigger the assertion on line 16960 of sem_ch3.adb since Parent_Base and Generic_Actual are the same node. This is changed to use Etype like in other cases around. The second issue is an unprotected use of Designated_Type on type T in Analyze_Explicit_Dereference, while another use in an equivalent context is guarded by Is_Access_Type a few lines above. gcc/ada PR ada/112781 * sem_ch12.adb (Instantiate_Type): Use Etype instead of Base_Type consistently to retrieve the ancestor for a derived type. * sem_ch4.adb (Analyze_Explicit_Dereference): Test Is_Access_Type consistently before accessing Designated_Type.
