[Bug ada/78175] segfault for package instantiation on function call returning string

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78175

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Eric Botcazou <ebotca...@gcc.gnu.org>:

https://gcc.gnu.org/g:7bdac5a4a5cdf896d0358ea576439b3c3321ef22

commit r16-5018-g7bdac5a4a5cdf896d0358ea576439b3c3321ef22
Author: Eric Botcazou <ebotca...@adacore.com>
Date:   Tue Nov 4 00:40:39 2025 +0100

    Ada: Fix segfault for instantiation on function call returning string

    The problem is that a transient scope is created during the analysis of the
    actual parameters of the instantiation and this discombobulates the complex
    handling of scopes in Sem_Ch12.

    gcc/ada/
            PR ada/78175
            * sem_ch12.adb (Hide_Current_Scope): Deal with a transient scope
            as current scope.
            (Remove_Parent): Likewise.

    gcc/testsuite/
            * gnat.dg/generic_inst15.adb: New test.
            * gnat.dg/generic_inst15_pkg-g.ads: New helper.
            * gnat.dg/generic_inst15_pkg.ads: Likewise.