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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/113612] [13/14 Regression] ICE: SIGSEGV in
 get_template_info (pt.cc:378) or tree_check (tree.h:3611)
Date: Tue, 06 Feb 2024 15:46:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113612

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
It was freed here in duplicate_decls:

#1  0x00000000012f535d in ggc_free (p=3D0x7fffea210e10) at
/home/mpolacek/src/gcc/gcc/ggc-page.cc:1630
#2  0x0000000000e971b2 in duplicate_decls (newdecl=3D<ggc_freed 0x7fffea210=
e10>,=20
    olddecl=3D<var_decl 0x7fffea210d80 t>, hiding=3Dfalse, was_hidden=3Dfal=
se)
    at /home/mpolacek/src/gcc/gcc/cp/decl.cc:3334
#3  0x00000000010a4bca in register_specialization (spec=3D<ggc_freed
0x7fffea210e10>,=20
    tmpl=3D<template_decl 0x7ffff7fc2080 t>, args=3D<tree_vec 0x7fffea3a7ca=
0>,
is_friend=3Dfalse, hash=3D2199381591)
    at /home/mpolacek/src/gcc/gcc/cp/pt.cc:1627
#4  0x00000000010b46e8 in process_partial_specialization (decl=3D<ggc_freed
0x7fffea210e10>)
    at /home/mpolacek/src/gcc/gcc/cp/pt.cc:5422
#5  0x00000000010b9420 in push_template_decl (decl=3D<ggc_freed 0x7fffea210=
e10>,
is_friend=3Dfalse)
    at /home/mpolacek/src/gcc/gcc/cp/pt.cc:6005
#6  0x0000000000ea198b in start_decl (declarator=3D0x48c4eb0,
declspecs=3D0x7fffffffd080, initialized=3D1,=20
    attributes=3D<tree 0x0>, prefix_attributes=3D<tree 0x0>,
pushed_scope_p=3D0x7fffffffcf40)
    at /home/mpolacek/src/gcc/gcc/cp/decl.cc:6108=