sys-devel/gdb: Revert "backport fix for auto-load path expansion"

This reverts commit 1bd52fc52dd36b4b83f51530685fc985482ff921.

The bug this patch fixes actually isn't in 13.2.  It was just a mirage.

Closes: https://bugs.gentoo.org/910390
Signed-off-by: Arsen Arsenović <arsen@gentoo.org>

2 files changed, 0 insertions, 230 deletions

diff --git a/sys-devel/gdb/files/gdb-13.2-fix-auto-load-path-expansion.patch b/sys-devel/gdb/files/gdb-13.2-fix-auto-load-path-expansion.patch
deleted file mode 100644
index 4af86f3917be..000000000000
--- a/sys-devel/gdb/files/gdb-13.2-fix-auto-load-path-expansion.patch
+++ /dev/null
@@ -1,229 +0,0 @@
-https://inbox.sourceware.org/gdb-patches/87351qo3n2.fsf@tromey.com/
-https://sourceware.org/cgit/binutils-gdb/commit/?id=02601231fdd91a7bd4837ce2029
-From 23e46b680f6fa6fce45aaf6c004cab6be322fbf1 Mon Sep 17 00:00:00 2001
-From: Tom Tromey <tromey@adacore.com>
-Date: Fri, 14 Jul 2023 09:35:03 -0600
-Subject: Revert "Simplify auto_load_expand_dir_vars and remove
- substitute_path_component"
-
-This reverts commit 02601231fdd91a7bd4837ce202906ea2ce661489.
-
-This commit was a refactoring to remove an xrealloc and simplify
-utils.[ch].  However, it has a flaw -- it mishandles a substitution
-like "$datadir/subdir".
-
-I am backing out the patch in the interests of fixing the regression
-before GDB 14.  It can be reinstated (with modifications) later if we
-like.
-
-Regression tested on x86-64 Fedora 36.
----
- gdb/Makefile.in                 |  1 +
- gdb/auto-load.c                 | 33 +++++++++--------------
- gdb/unittests/utils-selftests.c | 60 +++++++++++++++++++++++++++++++++++++++++
- gdb/utils.c                     | 45 +++++++++++++++++++++++++++++++
- gdb/utils.h                     |  3 +++
- 5 files changed, 121 insertions(+), 21 deletions(-)
- create mode 100644 gdb/unittests/utils-selftests.c
-
-diff --git a/gdb/Makefile.in b/gdb/Makefile.in
-index d909786792c..8521e8d11c8 100644
---- a/gdb/Makefile.in
-+++ b/gdb/Makefile.in
-@@ -490,6 +490,7 @@ SELFTESTS_SRCS = \
- 	unittests/ui-file-selftests.c \
- 	unittests/unique_xmalloc_ptr_char.c \
- 	unittests/unpack-selftests.c \
-+	unittests/utils-selftests.c \
- 	unittests/vec-utils-selftests.c \
- 	unittests/xml-utils-selftests.c
- 
-diff --git a/gdb/auto-load.c b/gdb/auto-load.c
-index 9d6fabe6bbc..5267cb4e64d 100644
---- a/gdb/auto-load.c
-+++ b/gdb/auto-load.c
-@@ -173,33 +173,24 @@ static std::string auto_load_safe_path = AUTO_LOAD_SAFE_PATH;
-    counterpart.  */
- static std::vector<gdb::unique_xmalloc_ptr<char>> auto_load_safe_path_vec;
- 
--/* Expand $datadir and $debugdir in STRING.  */
-+/* Expand $datadir and $debugdir in STRING according to the rules of
-+   substitute_path_component.  */
- 
- static std::vector<gdb::unique_xmalloc_ptr<char>>
- auto_load_expand_dir_vars (const char *string)
- {
--  std::vector<gdb::unique_xmalloc_ptr<char>> result
--    = dirnames_to_char_ptr_vec (string);
-+  char *s = xstrdup (string);
-+  substitute_path_component (&s, "$datadir", gdb_datadir.c_str ());
-+  substitute_path_component (&s, "$debugdir", debug_file_directory.c_str ());
- 
--  for (auto &elt : result)
--    {
--      if (strcmp (elt.get (), "$datadir") == 0)
--	{
--	  elt = make_unique_xstrdup (gdb_datadir.c_str ());
--	  if (debug_auto_load)
--	    auto_load_debug_printf ("Expanded $datadir to \"%s\".",
--				    gdb_datadir.c_str ());
--	}
--      else if (strcmp (elt.get (), "$debugdir") == 0)
--	{
--	  elt = make_unique_xstrdup (debug_file_directory.c_str ());
--	  if (debug_auto_load)
--	    auto_load_debug_printf ("Expanded $debugdir to \"%s\".",
--				    debug_file_directory.c_str ());
--	}
--    }
-+  if (debug_auto_load && strcmp (s, string) != 0)
-+    auto_load_debug_printf ("Expanded $-variables to \"%s\".", s);
-+
-+  std::vector<gdb::unique_xmalloc_ptr<char>> dir_vec
-+    = dirnames_to_char_ptr_vec (s);
-+  xfree(s);
- 
--  return result;
-+  return dir_vec;
- }
- 
- /* Update auto_load_safe_path_vec from current AUTO_LOAD_SAFE_PATH.  */
-diff --git a/gdb/unittests/utils-selftests.c b/gdb/unittests/utils-selftests.c
-new file mode 100644
-index 00000000000..70609aa4294
---- /dev/null
-+++ b/gdb/unittests/utils-selftests.c
-@@ -0,0 +1,60 @@
-+/* Unit tests for the utils.c file.
-+
-+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
-+
-+   This file is part of GDB.
-+
-+   This program is free software; you can redistribute it and/or modify
-+   it under the terms of the GNU General Public License as published by
-+   the Free Software Foundation; either version 3 of the License, or
-+   (at your option) any later version.
-+
-+   This program is distributed in the hope that it will be useful,
-+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+   GNU General Public License for more details.
-+
-+   You should have received a copy of the GNU General Public License
-+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-+
-+#include "defs.h"
-+#include "utils.h"
-+#include "gdbsupport/selftest.h"
-+
-+namespace selftests {
-+namespace utils {
-+
-+static void
-+test_substitute_path_component ()
-+{
-+  auto test = [] (std::string s, const char *from, const char *to,
-+		  const char *expected)
-+    {
-+      char *temp = xstrdup (s.c_str ());
-+      substitute_path_component (&temp, from, to);
-+      SELF_CHECK (strcmp (temp, expected) == 0);
-+      xfree (temp);
-+    };
-+
-+  test ("/abc/$def/g", "abc", "xyz", "/xyz/$def/g");
-+  test ("abc/$def/g", "abc", "xyz", "xyz/$def/g");
-+  test ("/abc/$def/g", "$def", "xyz", "/abc/xyz/g");
-+  test ("/abc/$def/g", "g", "xyz", "/abc/$def/xyz");
-+  test ("/abc/$def/g", "ab", "xyz", "/abc/$def/g");
-+  test ("/abc/$def/g", "def", "xyz", "/abc/$def/g");
-+  test ("/abc/$def/g", "abc", "abc", "/abc/$def/g");
-+  test ("/abc/$def/g", "abc", "", "//$def/g");
-+  test ("/abc/$def/g", "abc/$def", "xyz", "/xyz/g");
-+  test ("/abc/$def/abc", "abc", "xyz", "/xyz/$def/xyz");
-+}
-+
-+}
-+}
-+
-+void _initialize_utils_selftests ();
-+void
-+_initialize_utils_selftests ()
-+{
-+  selftests::register_test ("substitute_path_component",
-+			    selftests::utils::test_substitute_path_component);
-+}
-diff --git a/gdb/utils.c b/gdb/utils.c
-index 46bfd9a5bbb..cacd6cbd23e 100644
---- a/gdb/utils.c
-+++ b/gdb/utils.c
-@@ -3346,6 +3346,51 @@ parse_pid_to_attach (const char *args)
-   return pid;
- }
- 
-+/* Substitute all occurrences of string FROM by string TO in *STRINGP.  *STRINGP
-+   must come from xrealloc-compatible allocator and it may be updated.  FROM
-+   needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
-+   located at the start or end of *STRINGP.  */
-+
-+void
-+substitute_path_component (char **stringp, const char *from, const char *to)
-+{
-+  char *string = *stringp, *s;
-+  const size_t from_len = strlen (from);
-+  const size_t to_len = strlen (to);
-+
-+  for (s = string;;)
-+    {
-+      s = strstr (s, from);
-+      if (s == NULL)
-+	break;
-+
-+      if ((s == string || IS_DIR_SEPARATOR (s[-1])
-+	   || s[-1] == DIRNAME_SEPARATOR)
-+	  && (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len])
-+	      || s[from_len] == DIRNAME_SEPARATOR))
-+	{
-+	  char *string_new;
-+
-+	  string_new
-+	    = (char *) xrealloc (string, (strlen (string) + to_len + 1));
-+
-+	  /* Relocate the current S pointer.  */
-+	  s = s - string + string_new;
-+	  string = string_new;
-+
-+	  /* Replace from by to.  */
-+	  memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1);
-+	  memcpy (s, to, to_len);
-+
-+	  s += to_len;
-+	}
-+      else
-+	s++;
-+    }
-+
-+  *stringp = string;
-+}
-+
- #ifdef HAVE_WAITPID
- 
- #ifdef SIGALRM
-diff --git a/gdb/utils.h b/gdb/utils.h
-index 3faac20ec0f..ad0a86746b8 100644
---- a/gdb/utils.h
-+++ b/gdb/utils.h
-@@ -136,6 +136,9 @@ private:
- extern int gdb_filename_fnmatch (const char *pattern, const char *string,
- 				 int flags);
- 
-+extern void substitute_path_component (char **stringp, const char *from,
-+				       const char *to);
-+
- std::string ldirname (const char *filename);
- 
- extern int count_path_elements (const char *path);
--- 
-cgit 
-
diff --git a/sys-devel/gdb/gdb-13.2-r2.ebuild b/sys-devel/gdb/gdb-13.2-r1.ebuild
index 9159d8230726..09dfedaf1ee1 100644
--- a/sys-devel/gdb/gdb-13.2-r2.ebuild
+++ b/sys-devel/gdb/gdb-13.2-r1.ebuild
@@ -111,7 +111,6 @@ BDEPEND="
 PATCHES=(
 	"${FILESDIR}"/${PN}-8.3.1-verbose-build.patch
 	"${FILESDIR}"/${P}-fix-sparc-debugging.patch
-	"${FILESDIR}"/${P}-fix-auto-load-path-expansion.patch
 )
 
 pkg_setup() {