rpms
/
gdb
7
0
Fork 0
Code Issues Pull Requests Releases Activity
gdb/SOURCES/gdb-find_and_open_source-em...

328 lines
11 KiB
Diff
Raw Blame History

From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Keith Seitz <keiths@redhat.com>
Date: Mon, 4 Dec 2023 11:04:22 -0800
Subject: gdb-find_and_open_source-empty-string-ub-1of4.patch
;; Backport "gdbsupport: make gdb_abspath return an std::string"
;; (Simon Marchi)
I'm trying to switch these functions to use std::string instead of char
arrays, as much as possible. Some callers benefit from it (can avoid
doing a copy of the result), while others suffer (have to make one more
copy).
Change-Id: Iced49b8ee2f189744c5072a3b217aab5af17a993
diff --git a/gdb/compile/compile.c b/gdb/compile/compile.c
--- a/gdb/compile/compile.c
+++ b/gdb/compile/compile.c
@@ -295,8 +295,8 @@ compile_file_command (const char *args, int from_tty)
error (_("You must provide a filename for this command."));
args = skip_spaces (args);
- gdb::unique_xmalloc_ptr<char> abspath = gdb_abspath (args);
- std::string buffer = string_printf ("#include \"%s\"\n", abspath.get ());
+ std::string abspath = gdb_abspath (args);
+ std::string buffer = string_printf ("#include \"%s\"\n", abspath.c_str ());
eval_compile_command (NULL, buffer.c_str (), scope, NULL);
}
diff --git a/gdb/completer.c b/gdb/completer.c
--- a/gdb/completer.c
+++ b/gdb/completer.c
@@ -2036,7 +2036,7 @@ gdb_completion_word_break_characters_throw ()
rl_basic_quote_characters = NULL;
}
- return rl_completer_word_break_characters;
+ return (char *) rl_completer_word_break_characters;
}
char *
diff --git a/gdb/corelow.c b/gdb/corelow.c
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
@@ -447,7 +447,7 @@ core_target_open (const char *arg, int from_tty)
gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg));
if (!IS_ABSOLUTE_PATH (filename.get ()))
- filename = gdb_abspath (filename.get ());
+ filename = make_unique_xstrdup (gdb_abspath (filename.get ()).c_str ());
flags = O_BINARY | O_LARGEFILE;
if (write_files)
diff --git a/gdb/dwarf2/index-cache.c b/gdb/dwarf2/index-cache.c
--- a/gdb/dwarf2/index-cache.c
+++ b/gdb/dwarf2/index-cache.c
@@ -291,7 +291,8 @@ set_index_cache_directory_command (const char *arg, int from_tty,
cmd_list_element *element)
{
/* Make sure the index cache directory is absolute and tilde-expanded. */
- gdb::unique_xmalloc_ptr<char> abs (gdb_abspath (index_cache_directory));
+ gdb::unique_xmalloc_ptr<char> abs
+ = make_unique_xstrdup (gdb_abspath (index_cache_directory).c_str ());
xfree (index_cache_directory);
index_cache_directory = abs.release ();
global_index_cache.set_directory (index_cache_directory);
diff --git a/gdb/main.c b/gdb/main.c
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -135,12 +135,7 @@ set_gdb_data_directory (const char *new_datadir)
"../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
isn't canonical, but that's ok. */
if (!IS_ABSOLUTE_PATH (gdb_datadir.c_str ()))
- {
- gdb::unique_xmalloc_ptr<char> abs_datadir
- = gdb_abspath (gdb_datadir.c_str ());
-
- gdb_datadir = abs_datadir.get ();
- }
+ gdb_datadir = gdb_abspath (gdb_datadir.c_str ());
}
/* Relocate a file or directory. PROGNAME is the name by which gdb
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -341,7 +341,7 @@ objfile::objfile (bfd *abfd, const char *name, objfile_flags flags_)
objfile_alloc_data (this);
- gdb::unique_xmalloc_ptr<char> name_holder;
+ std::string name_holder;
if (name == NULL)
{
gdb_assert (abfd == NULL);
@@ -354,7 +354,7 @@ objfile::objfile (bfd *abfd, const char *name, objfile_flags flags_)
else
{
name_holder = gdb_abspath (name);
- expanded_name = name_holder.get ();
+ expanded_name = name_holder.c_str ();
}
original_name = obstack_strdup (&objfile_obstack, expanded_name);
diff --git a/gdb/source.c b/gdb/source.c
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -512,15 +512,15 @@ add_path (const char *dirname, char **which_path, int parse_separators)
for (const gdb::unique_xmalloc_ptr<char> &name_up : dir_vec)
{
- char *name = name_up.get ();
+ const char *name = name_up.get ();
char *p;
struct stat st;
- gdb::unique_xmalloc_ptr<char> new_name_holder;
+ std::string new_name_holder;
/* Spaces and tabs will have been removed by buildargv().
NAME is the start of the directory.
P is the '\0' following the end. */
- p = name + strlen (name);
+ p = name_up.get () + strlen (name);
while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
@@ -561,16 +561,18 @@ add_path (const char *dirname, char **which_path, int parse_separators)
}
if (name[0] == '~')
- new_name_holder.reset (tilde_expand (name));
+ new_name_holder
+ = gdb::unique_xmalloc_ptr<char[]> (tilde_expand (name)).get ();
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */
- new_name_holder.reset (concat (name, ".", (char *) NULL));
+ new_name_holder = std::string (name) + ".";
#endif
else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$')
new_name_holder = gdb_abspath (name);
else
- new_name_holder.reset (savestring (name, p - name));
- name = new_name_holder.get ();
+ new_name_holder = std::string (name, p - name);
+
+ name = new_name_holder.c_str ();
/* Unless it's a variable, check existence. */
if (name[0] != '$')
@@ -915,7 +917,8 @@ openp (const char *path, openp_flags opts, const char *string,
else if ((opts & OPF_RETURN_REALPATH) != 0)
*filename_opened = gdb_realpath (filename);
else
- *filename_opened = gdb_abspath (filename);
+ *filename_opened
+ = make_unique_xstrdup (gdb_abspath (filename).c_str ());
}
errno = last_errno;
diff --git a/gdb/top.c b/gdb/top.c
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -2065,8 +2065,7 @@ init_history (void)
const char *fname = ".gdb_history";
#endif
- gdb::unique_xmalloc_ptr<char> temp (gdb_abspath (fname));
- history_filename = temp.release ();
+ history_filename = xstrdup (gdb_abspath (fname).c_str ());
}
if (!history_filename_empty ())
@@ -2150,10 +2149,10 @@ set_history_filename (const char *args,
that was read. */
if (!history_filename_empty () && !IS_ABSOLUTE_PATH (history_filename))
{
- gdb::unique_xmalloc_ptr<char> temp (gdb_abspath (history_filename));
+ std::string temp = gdb_abspath (history_filename);
xfree (history_filename);
- history_filename = temp.release ();
+ history_filename = xstrdup (temp.c_str ());
}
}
diff --git a/gdb/tracefile-tfile.c b/gdb/tracefile-tfile.c
--- a/gdb/tracefile-tfile.c
+++ b/gdb/tracefile-tfile.c
@@ -471,7 +471,7 @@ tfile_target_open (const char *arg, int from_tty)
gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg));
if (!IS_ABSOLUTE_PATH (filename.get ()))
- filename = gdb_abspath (filename.get ());
+ filename = make_unique_xstrdup (gdb_abspath (filename.get ()).c_str ());
flags = O_BINARY | O_LARGEFILE;
flags |= O_RDONLY;
diff --git a/gdbserver/server.cc b/gdbserver/server.cc
--- a/gdbserver/server.cc
+++ b/gdbserver/server.cc
@@ -93,31 +93,31 @@ bool non_stop;
static struct {
/* Set the PROGRAM_PATH. Here we adjust the path of the provided
binary if needed. */
- void set (gdb::unique_xmalloc_ptr<char> &&path)
+ void set (const char *path)
{
- m_path = std::move (path);
+ m_path = path;
/* Make sure we're using the absolute path of the inferior when
creating it. */
- if (!contains_dir_separator (m_path.get ()))
+ if (!contains_dir_separator (m_path.c_str ()))
{
int reg_file_errno;
/* Check if the file is in our CWD. If it is, then we prefix
its name with CURRENT_DIRECTORY. Otherwise, we leave the
name as-is because we'll try searching for it in $PATH. */
- if (is_regular_file (m_path.get (), &reg_file_errno))
- m_path = gdb_abspath (m_path.get ());
+ if (is_regular_file (m_path.c_str (), &reg_file_errno))
+ m_path = gdb_abspath (m_path.c_str ());
}
}
/* Return the PROGRAM_PATH. */
- char *get ()
- { return m_path.get (); }
+ const char *get ()
+ { return m_path.empty () ? nullptr : m_path.c_str (); }
private:
/* The program name, adjusted if needed. */
- gdb::unique_xmalloc_ptr<char> m_path;
+ std::string m_path;
} program_path;
static std::vector<char *> program_args;
static std::string wrapper_argv;
@@ -3054,7 +3054,7 @@ handle_v_run (char *own_buf)
}
}
else
- program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name));
+ program_path.set (new_program_name);
/* Free the old argv and install the new one. */
free_vector_argv (program_args);
@@ -3845,7 +3845,7 @@ captured_main (int argc, char *argv[])
int i, n;
n = argc - (next_arg - argv);
- program_path.set (make_unique_xstrdup (next_arg[0]));
+ program_path.set (next_arg[0]);
for (i = 1; i < n; i++)
program_args.push_back (xstrdup (next_arg[i]));
diff --git a/gdbsupport/pathstuff.cc b/gdbsupport/pathstuff.cc
--- a/gdbsupport/pathstuff.cc
+++ b/gdbsupport/pathstuff.cc
@@ -126,23 +126,23 @@ gdb_realpath_keepfile (const char *filename)
/* See gdbsupport/pathstuff.h. */
-gdb::unique_xmalloc_ptr<char>
+std::string
gdb_abspath (const char *path)
{
gdb_assert (path != NULL && path[0] != '\0');
if (path[0] == '~')
- return gdb_tilde_expand_up (path);
+ return gdb_tilde_expand (path);
if (IS_ABSOLUTE_PATH (path) || current_directory == NULL)
- return make_unique_xstrdup (path);
+ return path;
/* Beware the // my son, the Emacs barfs, the botch that catch... */
- return gdb::unique_xmalloc_ptr<char>
- (concat (current_directory,
- IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
- ? "" : SLASH_STRING,
- path, (char *) NULL));
+ return string_printf
+ ("%s%s%s", current_directory,
+ (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
+ ? "" : SLASH_STRING),
+ path);
}
/* See gdbsupport/pathstuff.h. */
@@ -225,8 +225,8 @@ get_standard_cache_dir ()
if (xdg_cache_home != NULL)
{
/* Make sure the path is absolute and tilde-expanded. */
- gdb::unique_xmalloc_ptr<char> abs (gdb_abspath (xdg_cache_home));
- return string_printf ("%s/gdb", abs.get ());
+ std::string abs = gdb_abspath (xdg_cache_home);
+ return string_printf ("%s/gdb", abs.c_str ());
}
#endif
@@ -234,8 +234,8 @@ get_standard_cache_dir ()
if (home != NULL)
{
/* Make sure the path is absolute and tilde-expanded. */
- gdb::unique_xmalloc_ptr<char> abs (gdb_abspath (home));
- return string_printf ("%s/" HOME_CACHE_DIR "/gdb", abs.get ());
+ std::string abs = gdb_abspath (home);
+ return string_printf ("%s/" HOME_CACHE_DIR "/gdb", abs.c_str ());
}
return {};
diff --git a/gdbsupport/pathstuff.h b/gdbsupport/pathstuff.h
--- a/gdbsupport/pathstuff.h
+++ b/gdbsupport/pathstuff.h
@@ -49,7 +49,7 @@ extern gdb::unique_xmalloc_ptr<char>
If CURRENT_DIRECTORY is NULL, this function returns a copy of
PATH. */
-extern gdb::unique_xmalloc_ptr<char> gdb_abspath (const char *path);
+extern std::string gdb_abspath (const char *path);
/* If the path in CHILD is a child of the path in PARENT, return a
pointer to the first component in the CHILD's pathname below the
Reference in New Issue View Git Blame Copy Permalink