* [RFA 3/5] Change gdb_realpath to return a unique_xmalloc_ptr
2017-08-18 20:01 [RFA 0/5] simple string changes Tom Tromey
@ 2017-08-18 20:01 ` Tom Tromey
2017-08-18 20:01 ` [RFA 4/5] Change rewrite_source_path " Tom Tromey
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Tom Tromey @ 2017-08-18 20:01 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
This changes gdb_realpath to return a unique_xmalloc_ptr and fixes up
the callers. This allows removing some cleanups. This change by
itself caused xfullpath.exp to fail; and attempting to fix that ran
into various problems (like .get() being optimized out); so this patch
also rewrites xfullpath.exp to be a C++ selftest instead.
ChangeLog
2017-08-18 Tom Tromey <tom@tromey.com>
* exec.c (exec_file_attach): Update.
* linux-thread-db.c (try_thread_db_load): Update.
* guile/scm-safe-call.c (gdbscm_safe_source_script): Update.
* utils.c (gdb_realpath): Change return type.
(gdb_realpath_keepfile): Update.
(gdb_realpath_check_trailer, gdb_realpath_tests): New functions.
(_initialize_utils): Register the new self test.
* source.c (openp): Update.
(find_and_open_source): Update.
* nto-tdep.c (nto_find_and_open_solib): Update.
* main.c (set_gdb_data_directory): Update.
(captured_main_1): Update.
* dwarf2read.c (dwarf2_get_dwz_file): Update
(dw2_map_symbol_filenames): Update.
* auto-load.c (auto_load_safe_path_vec_update): Update.
(filename_is_in_auto_load_safe_path_vec): Change type of
"filename_realp".
(auto_load_objfile_script): Update.
(file_is_auto_load_safe): Update. Use std::string.
* utils.h (gdb_realpath): Return a gdb::unique_xmalloc_ptr.
testsuite/ChangeLog
2017-08-18 Tom Tromey <tom@tromey.com>
* gdb.gdb/xfullpath.exp: Remove.
---
gdb/ChangeLog | 23 +++++++++++++
gdb/auto-load.c | 69 +++++++++++++++----------------------
gdb/dwarf2read.c | 14 ++++----
gdb/exec.c | 27 ++++++---------
gdb/guile/scm-safe-call.c | 5 ++-
gdb/linux-thread-db.c | 2 +-
gdb/main.c | 5 +--
gdb/nto-tdep.c | 2 +-
gdb/objfiles.c | 2 +-
gdb/source.c | 4 +--
gdb/symtab.c | 2 +-
gdb/testsuite/ChangeLog | 4 +++
gdb/testsuite/gdb.gdb/xfullpath.exp | 60 --------------------------------
gdb/utils.c | 54 +++++++++++++++++++++++++----
gdb/utils.h | 2 +-
15 files changed, 130 insertions(+), 145 deletions(-)
delete mode 100644 gdb/testsuite/gdb.gdb/xfullpath.exp
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ec022c3..0257189 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,28 @@
2017-08-18 Tom Tromey <tom@tromey.com>
+ * exec.c (exec_file_attach): Update.
+ * linux-thread-db.c (try_thread_db_load): Update.
+ * guile/scm-safe-call.c (gdbscm_safe_source_script): Update.
+ * utils.c (gdb_realpath): Change return type.
+ (gdb_realpath_keepfile): Update.
+ (gdb_realpath_check_trailer, gdb_realpath_tests): New functions.
+ (_initialize_utils): Register the new self test.
+ * source.c (openp): Update.
+ (find_and_open_source): Update.
+ * nto-tdep.c (nto_find_and_open_solib): Update.
+ * main.c (set_gdb_data_directory): Update.
+ (captured_main_1): Update.
+ * dwarf2read.c (dwarf2_get_dwz_file): Update
+ (dw2_map_symbol_filenames): Update.
+ * auto-load.c (auto_load_safe_path_vec_update): Update.
+ (filename_is_in_auto_load_safe_path_vec): Change type of
+ "filename_realp".
+ (auto_load_objfile_script): Update.
+ (file_is_auto_load_safe): Update. Use std::string.
+ * utils.h (gdb_realpath): Return a gdb::unique_xmalloc_ptr.
+
+2017-08-18 Tom Tromey <tom@tromey.com>
+
* utils.c (gdb_realpath_keepfile): Return a
gdb::unique_xmalloc_ptr.
* exec.c (exec_file_attach): Update.
diff --git a/gdb/auto-load.c b/gdb/auto-load.c
index 9f1f13f..5bba813 100644
--- a/gdb/auto-load.c
+++ b/gdb/auto-load.c
@@ -218,7 +218,7 @@ auto_load_safe_path_vec_update (void)
{
char *dir = VEC_index (char_ptr, auto_load_safe_path_vec, ix);
char *expanded = tilde_expand (dir);
- char *real_path = gdb_realpath (expanded);
+ gdb::unique_xmalloc_ptr<char> real_path = gdb_realpath (expanded);
/* Ensure the current entry is at least tilde_expand-ed. */
VEC_replace (char_ptr, auto_load_safe_path_vec, ix, expanded);
@@ -238,16 +238,15 @@ auto_load_safe_path_vec_update (void)
xfree (dir);
/* If gdb_realpath returns a different content, append it. */
- if (strcmp (real_path, expanded) == 0)
- xfree (real_path);
- else
+ if (strcmp (real_path.get (), expanded) != 0)
{
- VEC_safe_push (char_ptr, auto_load_safe_path_vec, real_path);
-
if (debug_auto_load)
fprintf_unfiltered (gdb_stdlog,
_("auto-load: And canonicalized as \"%s\".\n"),
- real_path);
+ real_path.get ());
+
+ VEC_safe_push (char_ptr, auto_load_safe_path_vec,
+ real_path.release ());
}
}
}
@@ -419,12 +418,11 @@ filename_is_in_pattern (const char *filename, const char *pattern)
/* Return 1 if FILENAME belongs to one of directory components of
AUTO_LOAD_SAFE_PATH_VEC. Return 0 otherwise.
auto_load_safe_path_vec_update is never called.
- *FILENAME_REALP may be updated by gdb_realpath of FILENAME - it has to be
- freed by the caller. */
+ *FILENAME_REALP may be updated by gdb_realpath of FILENAME. */
static int
filename_is_in_auto_load_safe_path_vec (const char *filename,
- char **filename_realp)
+ gdb::unique_xmalloc_ptr<char> *filename_realp)
{
char *pattern;
int ix;
@@ -439,17 +437,17 @@ filename_is_in_auto_load_safe_path_vec (const char *filename,
if (*filename_realp == NULL)
{
*filename_realp = gdb_realpath (filename);
- if (debug_auto_load && strcmp (*filename_realp, filename) != 0)
+ if (debug_auto_load && strcmp (filename_realp->get (), filename) != 0)
fprintf_unfiltered (gdb_stdlog,
_("auto-load: Resolved "
"file \"%s\" as \"%s\".\n"),
- filename, *filename_realp);
+ filename, filename_realp->get ());
}
- if (strcmp (*filename_realp, filename) != 0)
+ if (strcmp (filename_realp->get (), filename) != 0)
for (ix = 0;
VEC_iterate (char_ptr, auto_load_safe_path_vec, ix, pattern); ++ix)
- if (filename_is_in_pattern (*filename_realp, pattern))
+ if (filename_is_in_pattern (filename_realp->get (), pattern))
break;
}
@@ -476,8 +474,7 @@ filename_is_in_auto_load_safe_path_vec (const char *filename,
int
file_is_auto_load_safe (const char *filename, const char *debug_fmt, ...)
{
- char *filename_real = NULL;
- struct cleanup *back_to;
+ gdb::unique_xmalloc_ptr<char> filename_real;
static int advice_printed = 0;
if (debug_auto_load)
@@ -489,34 +486,24 @@ file_is_auto_load_safe (const char *filename, const char *debug_fmt, ...)
va_end (debug_args);
}
- back_to = make_cleanup (free_current_contents, &filename_real);
-
if (filename_is_in_auto_load_safe_path_vec (filename, &filename_real))
- {
- do_cleanups (back_to);
- return 1;
- }
+ return 1;
auto_load_safe_path_vec_update ();
if (filename_is_in_auto_load_safe_path_vec (filename, &filename_real))
- {
- do_cleanups (back_to);
- return 1;
- }
+ return 1;
warning (_("File \"%s\" auto-loading has been declined by your "
"`auto-load safe-path' set to \"%s\"."),
- filename_real, auto_load_safe_path);
+ filename_real.get (), auto_load_safe_path);
if (!advice_printed)
{
const char *homedir = getenv ("HOME");
- char *homeinit;
if (homedir == NULL)
homedir = "$HOME";
- homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
- make_cleanup (xfree, homeinit);
+ std::string homeinit = string_printf ("%s/%s", homedir, gdbinit);
printf_filtered (_("\
To enable execution of this file add\n\
@@ -528,11 +515,11 @@ line to your configuration file \"%s\".\n\
For more information about this security protection see the\n\
\"Auto-loading safe path\" section in the GDB manual. E.g., run from the shell:\n\
\tinfo \"(gdb)Auto-loading safe path\"\n"),
- filename_real, homeinit, homeinit);
+ filename_real.get (),
+ homeinit.c_str (), homeinit.c_str ());
advice_printed = 1;
}
- do_cleanups (back_to);
return 0;
}
@@ -891,30 +878,28 @@ void
auto_load_objfile_script (struct objfile *objfile,
const struct extension_language_defn *language)
{
- char *realname = gdb_realpath (objfile_name (objfile));
- struct cleanup *cleanups = make_cleanup (xfree, realname);
+ gdb::unique_xmalloc_ptr<char> realname
+ = gdb_realpath (objfile_name (objfile));
- if (!auto_load_objfile_script_1 (objfile, realname, language))
+ if (!auto_load_objfile_script_1 (objfile, realname.get (), language))
{
/* For Windows/DOS .exe executables, strip the .exe suffix, so that
FOO-gdb.gdb could be used for FOO.exe, and try again. */
- size_t len = strlen (realname);
+ size_t len = strlen (realname.get ());
const size_t lexe = sizeof (".exe") - 1;
- if (len > lexe && strcasecmp (realname + len - lexe, ".exe") == 0)
+ if (len > lexe && strcasecmp (realname.get () + len - lexe, ".exe") == 0)
{
len -= lexe;
- realname[len] = '\0';
+ realname.get ()[len] = '\0';
if (debug_auto_load)
fprintf_unfiltered (gdb_stdlog, _("auto-load: Stripped .exe suffix, "
"retrying with \"%s\".\n"),
- realname);
- auto_load_objfile_script_1 (objfile, realname, language);
+ realname.get ());
+ auto_load_objfile_script_1 (objfile, realname.get (), language);
}
}
-
- do_cleanups (cleanups);
}
/* Subroutine of source_section_scripts to simplify it.
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 0e28144..3822850 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -2717,10 +2717,10 @@ dwarf2_get_dwz_file (void)
std::string abs_storage;
if (!IS_ABSOLUTE_PATH (filename))
{
- char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile));
+ gdb::unique_xmalloc_ptr<char> abs
+ = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile));
- make_cleanup (xfree, abs);
- abs_storage = ldirname (abs) + SLASH_STRING + filename;
+ abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename;
filename = abs_storage.c_str ();
}
@@ -3589,7 +3589,7 @@ dw2_get_real_path (struct objfile *objfile,
qfn->num_file_names, const char *);
if (qfn->real_names[index] == NULL)
- qfn->real_names[index] = gdb_realpath (qfn->file_names[index]);
+ qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release ();
return qfn->real_names[index];
}
@@ -4383,13 +4383,11 @@ dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun,
dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename)
{
- const char *this_real_name;
+ gdb::unique_xmalloc_ptr<char> this_real_name;
if (need_fullname)
this_real_name = gdb_realpath (filename);
- else
- this_real_name = NULL;
- (*fun) (filename, this_real_name, data);
+ (*fun) (filename, this_real_name.get (), data);
});
}
diff --git a/gdb/exec.c b/gdb/exec.c
index 45bc133..92c87e4 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -249,16 +249,12 @@ exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty)
void
exec_file_attach (const char *filename, int from_tty)
{
- struct cleanup *cleanups;
-
/* First, acquire a reference to the current exec_bfd. We release
this at the end of the function; but acquiring it now lets the
BFD cache return it if this call refers to the same file. */
gdb_bfd_ref (exec_bfd);
gdb_bfd_ref_ptr exec_bfd_holder (exec_bfd);
- cleanups = make_cleanup (null_cleanup, NULL);
-
/* Remove any previous exec file. */
exec_close ();
@@ -274,7 +270,7 @@ exec_file_attach (const char *filename, int from_tty)
else
{
int load_via_target = 0;
- char *scratch_pathname, *canonical_pathname;
+ const char *scratch_pathname, *canonical_pathname;
int scratch_chan;
struct target_section *sections = NULL, *sections_end = NULL;
char **matching;
@@ -287,6 +283,7 @@ exec_file_attach (const char *filename, int from_tty)
load_via_target = 1;
}
+ gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage;
if (load_via_target)
{
/* gdb_bfd_fopen does not support "target:" filenames. */
@@ -295,19 +292,18 @@ exec_file_attach (const char *filename, int from_tty)
"not supported for %s sysroots"),
TARGET_SYSROOT_PREFIX);
- scratch_pathname = xstrdup (filename);
- make_cleanup (xfree, scratch_pathname);
-
+ scratch_pathname = filename;
scratch_chan = -1;
-
canonical_pathname = scratch_pathname;
}
else
{
+ char *temp_pathname;
+
scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST,
filename, write_files ?
O_RDWR | O_BINARY : O_RDONLY | O_BINARY,
- &scratch_pathname);
+ &temp_pathname);
#if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__)
if (scratch_chan < 0)
{
@@ -318,18 +314,19 @@ exec_file_attach (const char *filename, int from_tty)
exename, write_files ?
O_RDWR | O_BINARY
: O_RDONLY | O_BINARY,
- &scratch_pathname);
+ &temp_pathname);
}
#endif
if (scratch_chan < 0)
perror_with_name (filename);
- make_cleanup (xfree, scratch_pathname);
+ scratch_storage.reset (temp_pathname);
+ scratch_pathname = temp_pathname;
/* gdb_bfd_open (and its variants) prefers canonicalized
pathname for better BFD caching. */
- canonical_pathname = gdb_realpath (scratch_pathname);
- make_cleanup (xfree, canonical_pathname);
+ canonical_storage = gdb_realpath (scratch_pathname);
+ canonical_pathname = canonical_storage.get ();
}
gdb_bfd_ref_ptr temp;
@@ -390,8 +387,6 @@ exec_file_attach (const char *filename, int from_tty)
(*deprecated_exec_file_display_hook) (filename);
}
- do_cleanups (cleanups);
-
bfd_cache_close_all ();
observer_notify_executable_changed ();
}
diff --git a/gdb/guile/scm-safe-call.c b/gdb/guile/scm-safe-call.c
index 64a69a3..15bab27 100644
--- a/gdb/guile/scm-safe-call.c
+++ b/gdb/guile/scm-safe-call.c
@@ -438,19 +438,18 @@ gdbscm_safe_source_script (const char *filename)
%load-path, but we don't want %load-path to be searched. At least not
by default. This function is invoked by the "source" GDB command which
already has its own path search support. */
- char *abs_filename = NULL;
+ gdb::unique_xmalloc_ptr<char> abs_filename;
const char *result;
if (!IS_ABSOLUTE_PATH (filename))
{
abs_filename = gdb_realpath (filename);
- filename = abs_filename;
+ filename = abs_filename.get ();
}
result = gdbscm_with_guile (scscm_source_scheme_script,
(void *) filename);
- xfree (abs_filename);
if (result != NULL)
return xstrdup (result);
return NULL;
diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index cf68013..6d98135 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -695,7 +695,7 @@ try_thread_db_load (const char *library, int check_auto_load_safe)
/* Do not save system library name, that one is always trusted. */
if (strchr (library, '/') != NULL)
- info->filename = gdb_realpath (library);
+ info->filename = gdb_realpath (library).release ();
if (try_thread_db_load_1 (info))
return 1;
diff --git a/gdb/main.c b/gdb/main.c
index 886e17f..a0646ed 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -120,7 +120,7 @@ set_gdb_data_directory (const char *new_datadir)
warning (_("%s is not a directory."), new_datadir);
xfree (gdb_datadir);
- gdb_datadir = gdb_realpath (new_datadir);
+ gdb_datadir = gdb_realpath (new_datadir).release ();
/* gdb_realpath won't return an absolute path if the path doesn't exist,
but we still want to record an absolute path here. If the user entered
@@ -1083,7 +1083,8 @@ captured_main_1 (struct captured_main_args *context)
the same as the $HOME/.gdbinit file (it should exist, also). */
if (local_gdbinit)
{
- auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
+ auto_load_local_gdbinit_pathname
+ = gdb_realpath (local_gdbinit).release ();
if (!inhibit_gdbinit && auto_load_local_gdbinit
&& file_is_auto_load_safe (local_gdbinit,
diff --git a/gdb/nto-tdep.c b/gdb/nto-tdep.c
index f9959ca..0b53c4b 100644
--- a/gdb/nto-tdep.c
+++ b/gdb/nto-tdep.c
@@ -142,7 +142,7 @@ nto_find_and_open_solib (const char *solib, unsigned o_flags,
if (temp_pathname)
{
if (ret >= 0)
- *temp_pathname = gdb_realpath (arch_path);
+ *temp_pathname = gdb_realpath (arch_path).release ();
else
*temp_pathname = NULL;
}
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index ff99ca6..c49c7ea 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -376,7 +376,7 @@ struct objfile *
allocate_objfile (bfd *abfd, const char *name, objfile_flags flags)
{
struct objfile *objfile;
- char *expanded_name;
+ const char *expanded_name;
objfile = XCNEW (struct objfile);
objfile->psymbol_cache = psymbol_bcache_init ();
diff --git a/gdb/source.c b/gdb/source.c
index e2a507d..0453f92 100644
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -911,7 +911,7 @@ done:
if (fd < 0)
*filename_opened = NULL;
else if ((opts & OPF_RETURN_REALPATH) != 0)
- *filename_opened = gdb_realpath (filename);
+ *filename_opened = gdb_realpath (filename).release ();
else
*filename_opened = gdb_abspath (filename).release ();
}
@@ -1050,7 +1050,7 @@ find_and_open_source (const char *filename,
result = gdb_open_cloexec (*fullname, OPEN_MODE, 0);
if (result >= 0)
{
- char *lpath = gdb_realpath (*fullname);
+ char *lpath = gdb_realpath (*fullname).release ();
xfree (*fullname);
*fullname = lpath;
diff --git a/gdb/symtab.c b/gdb/symtab.c
index ccf31cc..2babe7f 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -468,7 +468,7 @@ iterate_over_symtabs (const char *name,
absolutizing a relative path. */
if (IS_ABSOLUTE_PATH (name))
{
- real_path.reset (gdb_realpath (name));
+ real_path = gdb_realpath (name);
gdb_assert (IS_ABSOLUTE_PATH (real_path.get ()));
}
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index d188f83..78e7940 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2017-08-18 Tom Tromey <tom@tromey.com>
+
+ * gdb.gdb/xfullpath.exp: Remove.
+
2017-08-18 Yao Qi <yao.qi@linaro.org>
* gdb.server/unittest.exp: New.
diff --git a/gdb/testsuite/gdb.gdb/xfullpath.exp b/gdb/testsuite/gdb.gdb/xfullpath.exp
deleted file mode 100644
index 8c90693..0000000
--- a/gdb/testsuite/gdb.gdb/xfullpath.exp
+++ /dev/null
@@ -1,60 +0,0 @@
-# Copyright 2002-2017 Free Software Foundation, Inc.
-
-# 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/>.
-
-# This file was written by Joel Brobecker. (brobecker@gnat.com), derived
-# from selftest.exp, written by Rob Savoye.
-
-load_lib selftest-support.exp
-
-proc test_with_self {} {
- # A file which contains a directory prefix
- gdb_test "print gdb_realpath (\"./xfullpath.exp\")" \
- ".\[0-9\]+ =.*\".*/xfullpath.exp\"" \
- "A filename with ./ as the directory prefix"
-
- # A file which contains a directory prefix
- gdb_test "print gdb_realpath (\"../../defs.h\")" \
- ".\[0-9\]+ =.*\".*/defs.h\"" \
- "A filename with ../ in the directory prefix"
-
- # A one-character filename
- gdb_test "print gdb_realpath (\"./a\")" \
- ".\[0-9\]+ =.*\".*/a\"" \
- "A one-char filename in the current directory"
-
- # A file in the root directory
- gdb_test "print gdb_realpath (\"/root_file_which_should_exist\")" \
- ".\[0-9\]+ =.*\"/root_file_which_should_exist\"" \
- "A filename in the root directory"
-
- # A file which does not have a directory prefix
- gdb_test "print gdb_realpath (\"xfullpath.exp\")" \
- ".\[0-9\]+ =.*\"xfullpath.exp\"" \
- "A filename without any directory prefix"
-
- # A one-char filename without any directory prefix
- gdb_test "print gdb_realpath (\"a\")" \
- ".\[0-9\]+ =.*\"a\"" \
- "A one-char filename without any directory prefix"
-
- # An empty filename
- gdb_test "print gdb_realpath (\"\")" \
- ".\[0-9\]+ =.*\"\"" \
- "an empty filename"
-
- return 0
-}
-
-do_self_tests captured_main test_with_self
diff --git a/gdb/utils.c b/gdb/utils.c
index 5bdc638..3ca29b7 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -66,6 +66,7 @@
#include "interps.h"
#include "gdb_regex.h"
#include "job-control.h"
+#include "common/selftest.h"
#if !HAVE_DECL_MALLOC
extern PTR malloc (); /* ARI: PTR */
@@ -2662,7 +2663,7 @@ string_to_core_addr (const char *my_string)
return addr;
}
-char *
+gdb::unique_xmalloc_ptr<char>
gdb_realpath (const char *filename)
{
/* On most hosts, we rely on canonicalize_file_name to compute
@@ -2698,21 +2699,57 @@ gdb_realpath (const char *filename)
we might not be able to display the original casing in a given
path. */
if (len > 0 && len < MAX_PATH)
- return xstrdup (buf);
+ return gdb::unique_xmalloc_ptr<char> (xstrdup (buf));
}
#else
{
char *rp = canonicalize_file_name (filename);
if (rp != NULL)
- return rp;
+ return gdb::unique_xmalloc_ptr<char> (rp);
}
#endif
/* This system is a lost cause, just dup the buffer. */
- return xstrdup (filename);
+ return gdb::unique_xmalloc_ptr<char> (xstrdup (filename));
}
+#if GDB_SELF_TEST
+
+static void
+gdb_realpath_check_trailer (const char *input, const char *trailer)
+{
+ gdb::unique_xmalloc_ptr<char> result = gdb_realpath (input);
+
+ size_t len = strlen (result.get ());
+ size_t trail_len = strlen (trailer);
+
+ SELF_CHECK (len >= trail_len
+ && strcmp (result.get () + len - trail_len, trailer) == 0);
+}
+
+static void
+gdb_realpath_tests ()
+{
+ /* A file which contains a directory prefix. */
+ gdb_realpath_check_trailer ("./xfullpath.exp", "/xfullpath.exp");
+ /* A file which contains a directory prefix. */
+ gdb_realpath_check_trailer ("../../defs.h", "/defs.h");
+ /* A one-character filename. */
+ gdb_realpath_check_trailer ("./a", "/a");
+ /* A file in the root directory. */
+ gdb_realpath_check_trailer ("/root_file_which_should_exist",
+ "/root_file_which_should_exist");
+ /* A file which does not have a directory prefix. */
+ gdb_realpath_check_trailer ("xfullpath.exp", "xfullpath.exp");
+ /* A one-char filename without any directory prefix. */
+ gdb_realpath_check_trailer ("a", "a");
+ /* An empty filename. */
+ gdb_realpath_check_trailer ("", "");
+}
+
+#endif /* GDB_SELF_TEST */
+
/* Return a copy of FILENAME, with its directory prefix canonicalized
by gdb_realpath. */
@@ -2721,7 +2758,6 @@ gdb_realpath_keepfile (const char *filename)
{
const char *base_name = lbasename (filename);
char *dir_name;
- char *real_path;
char *result;
/* Extract the basename of filename, and return immediately
@@ -2749,13 +2785,13 @@ gdb_realpath_keepfile (const char *filename)
/* Canonicalize the directory prefix, and build the resulting
filename. If the dirname realpath already contains an ending
directory separator, avoid doubling it. */
- real_path = gdb_realpath (dir_name);
+ gdb::unique_xmalloc_ptr<char> path_storage = gdb_realpath (dir_name);
+ const char *real_path = path_storage.get ();
if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1]))
result = concat (real_path, base_name, (char *) NULL);
else
result = concat (real_path, SLASH_STRING, base_name, (char *) NULL);
- xfree (real_path);
return gdb::unique_xmalloc_ptr<char> (result);
}
@@ -3283,4 +3319,8 @@ _initialize_utils (void)
add_internal_problem_command (&internal_error_problem);
add_internal_problem_command (&internal_warning_problem);
add_internal_problem_command (&demangler_warning_problem);
+
+#if GDB_SELF_TEST
+ selftests::register_test (gdb_realpath_tests);
+#endif
}
diff --git a/gdb/utils.h b/gdb/utils.h
index 477257b..3ceefc1 100644
--- a/gdb/utils.h
+++ b/gdb/utils.h
@@ -252,7 +252,7 @@ extern struct cleanup *make_bpstat_clear_actions_cleanup (void);
\f
/* Path utilities. */
-extern char *gdb_realpath (const char *);
+extern gdb::unique_xmalloc_ptr<char> gdb_realpath (const char *);
extern gdb::unique_xmalloc_ptr<char> gdb_realpath_keepfile (const char *);
--
2.9.4
^ permalink raw reply [flat|nested] 7+ messages in thread* [RFA 4/5] Change rewrite_source_path to return a unique_xmalloc_ptr
2017-08-18 20:01 [RFA 0/5] simple string changes Tom Tromey
2017-08-18 20:01 ` [RFA 3/5] Change gdb_realpath to return a unique_xmalloc_ptr Tom Tromey
@ 2017-08-18 20:01 ` Tom Tromey
2017-08-18 20:01 ` [RFA 1/5] Change gdb_abspath " Tom Tromey
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Tom Tromey @ 2017-08-18 20:01 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
This changes rewrite_source_path to return a unique_xmalloc_ptr and
fixes up the callers. This allows removing some cleanups.
ChangeLog
2017-08-18 Tom Tromey <tom@tromey.com>
* source.h (rewrite_source_path): Return a unique_xmalloc_ptr.
* source.c (rewrite_source_path): Return a unique_xmalloc_ptr.
(find_and_open_source, symtab_to_fullname): Update.
* psymtab.c (psymtab_to_fullname): Update.
---
gdb/ChangeLog | 7 +++++++
gdb/psymtab.c | 15 ++++++---------
gdb/source.c | 50 +++++++++++++++++++-------------------------------
gdb/source.h | 2 +-
4 files changed, 33 insertions(+), 41 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0257189..a15df78 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
2017-08-18 Tom Tromey <tom@tromey.com>
+ * source.h (rewrite_source_path): Return a unique_xmalloc_ptr.
+ * source.c (rewrite_source_path): Return a unique_xmalloc_ptr.
+ (find_and_open_source, symtab_to_fullname): Update.
+ * psymtab.c (psymtab_to_fullname): Update.
+
+2017-08-18 Tom Tromey <tom@tromey.com>
+
* exec.c (exec_file_attach): Update.
* linux-thread-db.c (try_thread_db_load): Update.
* guile/scm-safe-call.c (gdbscm_safe_source_script): Update.
diff --git a/gdb/psymtab.c b/gdb/psymtab.c
index 8283545..6307d6e 100644
--- a/gdb/psymtab.c
+++ b/gdb/psymtab.c
@@ -1199,23 +1199,20 @@ psymtab_to_fullname (struct partial_symtab *ps)
close (fd);
else
{
- char *fullname;
- struct cleanup *back_to;
+ gdb::unique_xmalloc_ptr<char> fullname;
/* rewrite_source_path would be applied by find_and_open_source, we
should report the pathname where GDB tried to find the file. */
if (ps->dirname == NULL || IS_ABSOLUTE_PATH (ps->filename))
- fullname = xstrdup (ps->filename);
+ fullname.reset (xstrdup (ps->filename));
else
- fullname = concat (ps->dirname, SLASH_STRING,
- ps->filename, (char *) NULL);
+ fullname.reset (concat (ps->dirname, SLASH_STRING,
+ ps->filename, (char *) NULL));
- back_to = make_cleanup (xfree, fullname);
- ps->fullname = rewrite_source_path (fullname);
+ ps->fullname = rewrite_source_path (fullname.get ()).release ();
if (ps->fullname == NULL)
- ps->fullname = xstrdup (fullname);
- do_cleanups (back_to);
+ ps->fullname = fullname.release ();
}
}
diff --git a/gdb/source.c b/gdb/source.c
index 0453f92..5403715 100644
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -994,13 +994,12 @@ get_substitute_path_rule (const char *path)
}
/* If the user specified a source path substitution rule that applies
- to PATH, then apply it and return the new path. This new path must
- be deallocated afterwards.
-
+ to PATH, then apply it and return the new path.
+
Return NULL if no substitution rule was specified by the user,
or if no rule applied to the given PATH. */
-
-char *
+
+gdb::unique_xmalloc_ptr<char>
rewrite_source_path (const char *path)
{
const struct substitute_path_rule *rule = get_substitute_path_rule (path);
@@ -1019,7 +1018,7 @@ rewrite_source_path (const char *path)
strcpy (new_path, rule->to);
strcat (new_path, path + from_len);
- return new_path;
+ return gdb::unique_xmalloc_ptr<char> (new_path);
}
int
@@ -1030,7 +1029,6 @@ find_and_open_source (const char *filename,
char *path = source_path;
const char *p;
int result;
- struct cleanup *cleanup;
/* Quick way out if we already know its full name. */
@@ -1039,7 +1037,7 @@ find_and_open_source (const char *filename,
/* The user may have requested that source paths be rewritten
according to substitution rules he provided. If a substitution
rule applies to this path, then apply it. */
- char *rewritten_fullname = rewrite_source_path (*fullname);
+ char *rewritten_fullname = rewrite_source_path (*fullname).release ();
if (rewritten_fullname != NULL)
{
@@ -1062,21 +1060,17 @@ find_and_open_source (const char *filename,
*fullname = NULL;
}
- cleanup = make_cleanup (null_cleanup, NULL);
-
+ gdb::unique_xmalloc_ptr<char> rewritten_dirname;
if (dirname != NULL)
{
/* If necessary, rewrite the compilation directory name according
to the source path substitution rules specified by the user. */
- char *rewritten_dirname = rewrite_source_path (dirname);
+ rewritten_dirname = rewrite_source_path (dirname);
if (rewritten_dirname != NULL)
- {
- make_cleanup (xfree, rewritten_dirname);
- dirname = rewritten_dirname;
- }
-
+ dirname = rewritten_dirname.get ();
+
/* Replace a path entry of $cdir with the compilation directory
name. */
#define cdir_len 5
@@ -1098,17 +1092,15 @@ find_and_open_source (const char *filename,
}
}
+ gdb::unique_xmalloc_ptr<char> rewritten_filename;
if (IS_ABSOLUTE_PATH (filename))
{
/* If filename is absolute path, try the source path
substitution on it. */
- char *rewritten_filename = rewrite_source_path (filename);
+ rewritten_filename = rewrite_source_path (filename);
if (rewritten_filename != NULL)
- {
- make_cleanup (xfree, rewritten_filename);
- filename = rewritten_filename;
- }
+ filename = rewritten_filename.get ();
}
result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename,
@@ -1122,7 +1114,6 @@ find_and_open_source (const char *filename,
OPEN_MODE, fullname);
}
- do_cleanups (cleanup);
return result;
}
@@ -1164,23 +1155,20 @@ symtab_to_fullname (struct symtab *s)
close (fd);
else
{
- char *fullname;
- struct cleanup *back_to;
+ gdb::unique_xmalloc_ptr<char> fullname;
/* rewrite_source_path would be applied by find_and_open_source, we
should report the pathname where GDB tried to find the file. */
if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename))
- fullname = xstrdup (s->filename);
+ fullname.reset (xstrdup (s->filename));
else
- fullname = concat (SYMTAB_DIRNAME (s), SLASH_STRING,
- s->filename, (char *) NULL);
+ fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING,
+ s->filename, (char *) NULL));
- back_to = make_cleanup (xfree, fullname);
- s->fullname = rewrite_source_path (fullname);
+ s->fullname = rewrite_source_path (fullname.get ()).release ();
if (s->fullname == NULL)
- s->fullname = xstrdup (fullname);
- do_cleanups (back_to);
+ s->fullname = fullname.release ();
}
}
diff --git a/gdb/source.h b/gdb/source.h
index ee9f3fa..263715a 100644
--- a/gdb/source.h
+++ b/gdb/source.h
@@ -48,7 +48,7 @@ extern int find_and_open_source (const char *filename,
negative number for error. */
extern int open_source_file (struct symtab *s);
-extern char *rewrite_source_path (const char *path);
+extern gdb::unique_xmalloc_ptr<char> rewrite_source_path (const char *path);
extern const char *symtab_to_fullname (struct symtab *s);
--
2.9.4
^ permalink raw reply [flat|nested] 7+ messages in thread* [RFA 1/5] Change gdb_abspath to return a unique_xmalloc_ptr
2017-08-18 20:01 [RFA 0/5] simple string changes Tom Tromey
2017-08-18 20:01 ` [RFA 3/5] Change gdb_realpath to return a unique_xmalloc_ptr Tom Tromey
2017-08-18 20:01 ` [RFA 4/5] Change rewrite_source_path " Tom Tromey
@ 2017-08-18 20:01 ` Tom Tromey
2017-08-18 20:01 ` [RFA 2/5] Change gdb_realpath_keepfile " Tom Tromey
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Tom Tromey @ 2017-08-18 20:01 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
This changes gdb_abspath to return a unique_xmalloc_ptr, and fixes up
the callers. This allows the removal of a cleanup, and also puts
ownership rules into the API, where they belong.
ChangeLog
2017-08-18 Tom Tromey <tom@tromey.com>
* compile/compile.c (compile_file_command): Use
gdb::unique_xmalloc_ptr, std::string.
* utils.c (gdb_abspath): Change return type.
* source.c (openp): Update.
* objfiles.c (allocate_objfile): Update.
* main.c (set_gdb_data_directory): Update.
* utils.h (gdb_abspath): Return a gdb::unique_xmalloc_ptr.
---
gdb/ChangeLog | 10 ++++++++++
gdb/compile/compile.c | 11 +++--------
gdb/main.c | 4 ++--
gdb/objfiles.c | 11 +++++++----
gdb/source.c | 2 +-
gdb/utils.c | 21 +++++++++------------
gdb/utils.h | 2 +-
7 files changed, 33 insertions(+), 28 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7ad3f4c..e75d1b7 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,4 +1,14 @@
2017-08-18 Tom Tromey <tom@tromey.com>
+
+ * compile/compile.c (compile_file_command): Use
+ gdb::unique_xmalloc_ptr, std::string.
+ * utils.c (gdb_abspath): Change return type.
+ * source.c (openp): Update.
+ * objfiles.c (allocate_objfile): Update.
+ * main.c (set_gdb_data_directory): Update.
+ * utils.h (gdb_abspath): Return a gdb::unique_xmalloc_ptr.
+
+2017-08-18 Tom Tromey <tom@tromey.com>
Pedro Alves <palves@redhat.com>
* spu-multiarch.c (parse_spufs_run): Use scoped_restore.
diff --git a/gdb/compile/compile.c b/gdb/compile/compile.c
index bca7b57..91e084f 100644
--- a/gdb/compile/compile.c
+++ b/gdb/compile/compile.c
@@ -90,8 +90,6 @@ static void
compile_file_command (char *arg, int from_tty)
{
enum compile_i_scope_types scope = COMPILE_I_SIMPLE_SCOPE;
- char *buffer;
- struct cleanup *cleanup;
scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0);
@@ -115,12 +113,9 @@ compile_file_command (char *arg, int from_tty)
error (_("Unknown argument specified."));
arg = skip_spaces (arg);
- arg = gdb_abspath (arg);
- cleanup = make_cleanup (xfree, arg);
- buffer = xstrprintf ("#include \"%s\"\n", arg);
- make_cleanup (xfree, buffer);
- eval_compile_command (NULL, buffer, scope, NULL);
- do_cleanups (cleanup);
+ gdb::unique_xmalloc_ptr<char> abspath = gdb_abspath (arg);
+ std::string buffer = string_printf ("#include \"%s\"\n", abspath.get ());
+ eval_compile_command (NULL, buffer.c_str (), scope, NULL);
}
/* Handle the input from the 'compile code' command. The
diff --git a/gdb/main.c b/gdb/main.c
index 9813041..886e17f 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -128,10 +128,10 @@ set_gdb_data_directory (const char *new_datadir)
isn't canonical, but that's ok. */
if (!IS_ABSOLUTE_PATH (gdb_datadir))
{
- char *abs_datadir = gdb_abspath (gdb_datadir);
+ gdb::unique_xmalloc_ptr<char> abs_datadir = gdb_abspath (gdb_datadir);
xfree (gdb_datadir);
- gdb_datadir = abs_datadir;
+ gdb_datadir = abs_datadir.release ();
}
}
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index d261c87..ff99ca6 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -386,22 +386,25 @@ allocate_objfile (bfd *abfd, const char *name, objfile_flags flags)
objfile_alloc_data (objfile);
+ gdb::unique_xmalloc_ptr<char> name_holder;
if (name == NULL)
{
gdb_assert (abfd == NULL);
gdb_assert ((flags & OBJF_NOT_FILENAME) != 0);
- expanded_name = xstrdup ("<<anonymous objfile>>");
+ expanded_name = "<<anonymous objfile>>";
}
else if ((flags & OBJF_NOT_FILENAME) != 0
|| is_target_filename (name))
- expanded_name = xstrdup (name);
+ expanded_name = name;
else
- expanded_name = gdb_abspath (name);
+ {
+ name_holder = gdb_abspath (name);
+ expanded_name = name_holder.get ();
+ }
objfile->original_name
= (char *) obstack_copy0 (&objfile->objfile_obstack,
expanded_name,
strlen (expanded_name));
- xfree (expanded_name);
/* Update the per-objfile information that comes from the bfd, ensuring
that any data that is reference is saved in the per-objfile data
diff --git a/gdb/source.c b/gdb/source.c
index 769d9ef..e2a507d 100644
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -913,7 +913,7 @@ done:
else if ((opts & OPF_RETURN_REALPATH) != 0)
*filename_opened = gdb_realpath (filename);
else
- *filename_opened = gdb_abspath (filename);
+ *filename_opened = gdb_abspath (filename).release ();
}
errno = last_errno;
diff --git a/gdb/utils.c b/gdb/utils.c
index 96ae709..9959c01 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -2761,28 +2761,25 @@ gdb_realpath_keepfile (const char *filename)
/* Return PATH in absolute form, performing tilde-expansion if necessary.
PATH cannot be NULL or the empty string.
- This does not resolve symlinks however, use gdb_realpath for that.
- Space for the result is allocated with malloc.
- If the path is already absolute, it is strdup'd.
- If there is a problem computing the absolute path, the path is returned
- unchanged (still strdup'd). */
+ This does not resolve symlinks however, use gdb_realpath for that. */
-char *
+gdb::unique_xmalloc_ptr<char>
gdb_abspath (const char *path)
{
gdb_assert (path != NULL && path[0] != '\0');
if (path[0] == '~')
- return tilde_expand (path);
+ return gdb::unique_xmalloc_ptr<char> (tilde_expand (path));
if (IS_ABSOLUTE_PATH (path))
- return xstrdup (path);
+ return gdb::unique_xmalloc_ptr<char> (xstrdup (path));
/* Beware the // my son, the Emacs barfs, the botch that catch... */
- return concat (current_directory,
- IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
- ? "" : SLASH_STRING,
- path, (char *) NULL);
+ return gdb::unique_xmalloc_ptr<char>
+ (concat (current_directory,
+ IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
+ ? "" : SLASH_STRING,
+ path, (char *) NULL));
}
ULONGEST
diff --git a/gdb/utils.h b/gdb/utils.h
index bb5fadc..a2a959f 100644
--- a/gdb/utils.h
+++ b/gdb/utils.h
@@ -256,7 +256,7 @@ extern char *gdb_realpath (const char *);
extern char *gdb_realpath_keepfile (const char *);
-extern char *gdb_abspath (const char *);
+extern gdb::unique_xmalloc_ptr<char> gdb_abspath (const char *);
extern int gdb_filename_fnmatch (const char *pattern, const char *string,
int flags);
--
2.9.4
^ permalink raw reply [flat|nested] 7+ messages in thread