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Make find_separate_debug_file* return std::string

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This patch makes the find_separate_debug_file* functions return
std::string, which allows to get rid of some manual memory management
and one cleanup.

gdb/ChangeLog:

	* build-id.c (find_separate_debug_file_by_buildid): Return
	std::string.
	* build-id.h (find_separate_debug_file_by_buildid): Return
	std::string.
	* coffread.c (coff_symfile_read): Adjust to std::string.
	* elfread.c (elf_symfile_read): Adjust to std::string.
	* symfile.c (separate_debug_file_exists): Change parameter to
	std::string.
	(find_separate_debug_file): Return std::string.
	(find_separate_debug_file_by_debuglink): Return std::string.
	* symfile.h (find_separate_debug_file_by_debuglink): Return
	std::string.
This commit is contained in:
Simon Marchi 2018-03-08 18:56:23 -05:00 committed by Simon Marchi
parent e6a58aa8a7
commit a8dbfd5853
7 changed files with 66 additions and 70 deletions
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15
gdb/ChangeLog
View File

@ -1,3 +1,18 @@
2018-03-08 Simon Marchi <simon.marchi@polymtl.ca>
* build-id.c (find_separate_debug_file_by_buildid): Return
std::string.
* build-id.h (find_separate_debug_file_by_buildid): Return
std::string.
* coffread.c (coff_symfile_read): Adjust to std::string.
* elfread.c (elf_symfile_read): Adjust to std::string.
* symfile.c (separate_debug_file_exists): Change parameter to
std::string.
(find_separate_debug_file): Return std::string.
(find_separate_debug_file_by_debuglink): Return std::string.
* symfile.h (find_separate_debug_file_by_debuglink): Return
std::string.
2018-03-08 Simon Marchi <simon.marchi@polymtl.ca>
* common/xml-utils.c (xml_escape_text): Move code to...

7
gdb/build-id.c
View File

@ -136,7 +136,7 @@ build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
/* See build-id.h. */
char *
std::string
find_separate_debug_file_by_buildid (struct objfile *objfile)
{
const struct bfd_build_id *build_id;
@ -157,7 +157,8 @@ find_separate_debug_file_by_buildid (struct objfile *objfile)
warning (_("\"%s\": separate debug info file has no debug info"),
bfd_get_filename (abfd.get ()));
else if (abfd != NULL)
return xstrdup (bfd_get_filename (abfd.get ()));
return std::string (bfd_get_filename (abfd.get ()));
}
return NULL;
return std::string ();
}

8
gdb/build-id.h
View File

@ -41,10 +41,10 @@ extern gdb_bfd_ref_ptr build_id_to_debug_bfd (size_t build_id_len,
const bfd_byte *build_id);
/* Find the separate debug file for OBJFILE, by using the build-id
associated with OBJFILE's BFD. If successful, returns a malloc'd
file name for the separate debug file. The caller must free this.
Otherwise, returns NULL. */
associated with OBJFILE's BFD. If successful, returns the file name for the
separate debug file, otherwise, return an empty string. */
extern char *find_separate_debug_file_by_buildid (struct objfile *objfile);
extern std::string find_separate_debug_file_by_buildid
(struct objfile *objfile);
#endif /* BUILD_ID_H */

15
gdb/coffread.c
View File

@ -733,20 +733,17 @@ coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
/* Try to add separate debug file if no symbols table found. */
if (!objfile_has_partial_symbols (objfile))
{
char *debugfile;
std::string debugfile = find_separate_debug_file_by_buildid (objfile);
debugfile = find_separate_debug_file_by_buildid (objfile);
if (debugfile == NULL)
if (debugfile.empty ())
debugfile = find_separate_debug_file_by_debuglink (objfile);
make_cleanup (xfree, debugfile);
if (debugfile)
if (!debugfile.empty ())
{
gdb_bfd_ref_ptr abfd (symfile_bfd_open (debugfile));
gdb_bfd_ref_ptr abfd (symfile_bfd_open (debugfile.c_str ()));
symbol_file_add_separate (abfd.get (), debugfile, symfile_flags,
objfile);
symbol_file_add_separate (abfd.get (), debugfile.c_str (),
symfile_flags, objfile);
}
}

13
gdb/elfread.c
View File

@ -1259,17 +1259,16 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
&& objfile->separate_debug_objfile == NULL
&& objfile->separate_debug_objfile_backlink == NULL)
{
gdb::unique_xmalloc_ptr<char> debugfile
(find_separate_debug_file_by_buildid (objfile));
std::string debugfile = find_separate_debug_file_by_buildid (objfile);
if (debugfile == NULL)
debugfile.reset (find_separate_debug_file_by_debuglink (objfile));
if (debugfile.empty ())
debugfile = find_separate_debug_file_by_debuglink (objfile);
if (debugfile != NULL)
if (!debugfile.empty ())
{
gdb_bfd_ref_ptr abfd (symfile_bfd_open (debugfile.get ()));
gdb_bfd_ref_ptr abfd (symfile_bfd_open (debugfile.c_str ()));
symbol_file_add_separate (abfd.get (), debugfile.get (),
symbol_file_add_separate (abfd.get (), debugfile.c_str (),
symfile_flags, objfile);
}
}

76
gdb/symfile.c
View File

@ -1333,7 +1333,7 @@ symbol_file_clear (int from_tty)
int separate_debug_file_debug = 0;
static int
separate_debug_file_exists (const char *name, unsigned long crc,
separate_debug_file_exists (const std::string &name, unsigned long crc,
struct objfile *parent_objfile)
{
unsigned long file_crc;
@ -1347,13 +1347,13 @@ separate_debug_file_exists (const char *name, unsigned long crc,
".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where
the separate debug infos with the same basename can exist. */
if (filename_cmp (name, objfile_name (parent_objfile)) == 0)
if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0)
return 0;
if (separate_debug_file_debug)
printf_unfiltered (_(" Trying %s\n"), name);
printf_unfiltered (_(" Trying %s\n"), name.c_str ());
gdb_bfd_ref_ptr abfd (gdb_bfd_open (name, gnutarget, -1));
gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1));
if (abfd == NULL)
return 0;
@ -1403,7 +1403,7 @@ separate_debug_file_exists (const char *name, unsigned long crc,
if (verified_as_different || parent_crc != file_crc)
warning (_("the debug information found in \"%s\""
" does not match \"%s\" (CRC mismatch).\n"),
name, objfile_name (parent_objfile));
name.c_str (), objfile_name (parent_objfile));
return 0;
}
@ -1431,46 +1431,31 @@ show_debug_file_directory (struct ui_file *file, int from_tty,
dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are
looking for. CANON_DIR is the "realpath" form of DIR.
DIR must contain a trailing '/'.
Returns the path of the file with separate debug info, of NULL. */
Returns the path of the file with separate debug info, or an empty
string. */
static char *
static std::string
find_separate_debug_file (const char *dir,
const char *canon_dir,
const char *debuglink,
unsigned long crc32, struct objfile *objfile)
{
char *debugfile;
int i;
if (separate_debug_file_debug)
printf_unfiltered (_("\nLooking for separate debug info (debug link) for "
"%s\n"), objfile_name (objfile));
/* Set I to std::max (strlen (canon_dir), strlen (dir)). */
i = strlen (dir);
if (canon_dir != NULL && strlen (canon_dir) > i)
i = strlen (canon_dir);
debugfile
= (char *) xmalloc (strlen (debug_file_directory) + 1
+ i
+ strlen (DEBUG_SUBDIRECTORY)
+ strlen ("/")
+ strlen (debuglink)
+ 1);
/* First try in the same directory as the original file. */
strcpy (debugfile, dir);
strcat (debugfile, debuglink);
std::string debugfile = dir;
debugfile += debuglink;
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
/* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
strcpy (debugfile, dir);
strcat (debugfile, DEBUG_SUBDIRECTORY);
strcat (debugfile, "/");
strcat (debugfile, debuglink);
debugfile = dir;
debugfile += DEBUG_SUBDIRECTORY;
debugfile += "/";
debugfile += debuglink;
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
@ -1485,10 +1470,10 @@ find_separate_debug_file (const char *dir,
for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec)
{
strcpy (debugfile, debugdir.get ());
strcat (debugfile, "/");
strcat (debugfile, dir);
strcat (debugfile, debuglink);
debugfile = debugdir.get ();
debugfile += "/";
debugfile += dir;
debugfile += debuglink;
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
@ -1500,18 +1485,17 @@ find_separate_debug_file (const char *dir,
strlen (gdb_sysroot)) == 0
&& IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)]))
{
strcpy (debugfile, debugdir.get ());
strcat (debugfile, canon_dir + strlen (gdb_sysroot));
strcat (debugfile, "/");
strcat (debugfile, debuglink);
debugfile = debugdir.get ();
debugfile += (canon_dir + strlen (gdb_sysroot));
debugfile += "/";
debugfile += debuglink;
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
}
}
xfree (debugfile);
return NULL;
return std::string ();
}
/* Modify PATH to contain only "[/]directory/" part of PATH.
@ -1534,12 +1518,11 @@ terminate_after_last_dir_separator (char *path)
}
/* Find separate debuginfo for OBJFILE (using .gnu_debuglink section).
Returns pathname, or NULL. */
Returns pathname, or an empty string. */
char *
std::string
find_separate_debug_file_by_debuglink (struct objfile *objfile)
{
char *debugfile;
unsigned long crc32;
gdb::unique_xmalloc_ptr<char> debuglink
@ -1549,17 +1532,18 @@ find_separate_debug_file_by_debuglink (struct objfile *objfile)
{
/* There's no separate debug info, hence there's no way we could
load it => no warning. */
return NULL;
return std::string ();
}
std::string dir = objfile_name (objfile);
terminate_after_last_dir_separator (&dir[0]);
gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ()));
debugfile = find_separate_debug_file (dir.c_str (), canon_dir.get (),
debuglink.get (), crc32, objfile);
std::string debugfile
= find_separate_debug_file (dir.c_str (), canon_dir.get (),
debuglink.get (), crc32, objfile);
if (debugfile == NULL)
if (debugfile.empty ())
{
/* For PR gdb/9538, try again with realpath (if different from the
original). */

2
gdb/symfile.h
View File

@ -426,7 +426,7 @@ extern struct objfile *symbol_file_add_from_bfd (bfd *, const char *, symfile_ad
extern void symbol_file_add_separate (bfd *, const char *, symfile_add_flags,
struct objfile *);
extern char *find_separate_debug_file_by_debuglink (struct objfile *);
extern std::string find_separate_debug_file_by_debuglink (struct objfile *);
/* Create a new section_addr_info, with room for NUM_SECTIONS. */