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Free symbol buffers if they are no longer in use 

add_specific_symbols allocates a buffer to hold symbols.  It should be
freed only if it is no longer in use.

	PR binutils/23633
	* objcopy.c (strip_specific_buffer): New.
	(strip_unneeded_buffer): Likewise.
	(keep_specific_buffer): Likewise.
	(localize_specific_buffer): Likewise.
	(globalize_specific_buffer): Likewise.
	(keepglobal_specific_buffer): Likewise.
	(weaken_specific_buffer): Likewise.
	(add_specific_symbols): Add an argument to return pointer to
	allocated buffer.
	(copy_main): Update add_specific_symbols to update pointers to
	allocated buffer.  Free pointers to allocated buffer before
	return.
This commit is contained in:
H.J. Lu 2018-09-17 08:50:42 -07:00
parent e6cd1dc1e6
commit d839b91499
2 changed files with 60 additions and 8 deletions
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15
binutils/ChangeLog
View File

@ -1,3 +1,18 @@
2018-09-17 H.J. Lu <hongjiu.lu@intel.com>
* objcopy.c (strip_specific_buffer): New.
(strip_unneeded_buffer): Likewise.
(keep_specific_buffer): Likewise.
(localize_specific_buffer): Likewise.
(globalize_specific_buffer): Likewise.
(keepglobal_specific_buffer): Likewise.
(weaken_specific_buffer): Likewise.
(add_specific_symbols): Add an argument to return pointer to
allocated buffer.
(copy_main): Update add_specific_symbols to update pointers to
allocated buffer. Free pointers to allocated buffer before
return.
2018-09-17 Alan Modra <amodra@gmail.com>
* objcopy.c (handle_remove_section_option): Don't require a dot

53
binutils/objcopy.c
View File

@ -253,6 +253,14 @@ static htab_t redefine_specific_reverse_htab = NULL;
static struct addsym_node *add_sym_list = NULL, **add_sym_tail = &add_sym_list;
static int add_symbols = 0;
static char *strip_specific_buffer = NULL;
static char *strip_unneeded_buffer = NULL;
static char *keep_specific_buffer = NULL;
static char *localize_specific_buffer = NULL;
static char *globalize_specific_buffer = NULL;
static char *keepglobal_specific_buffer = NULL;
static char *weaken_specific_buffer = NULL;
/* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
static bfd_boolean weaken = FALSE;
@ -1034,7 +1042,7 @@ add_specific_symbol_node (const void *node, htab_t htab)
#define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
static void
add_specific_symbols (const char *filename, htab_t htab)
add_specific_symbols (const char *filename, htab_t htab, char **buffer_p)
{
off_t size;
FILE * f;
@ -1145,6 +1153,7 @@ add_specific_symbols (const char *filename, htab_t htab)
/* Do not free the buffer. Parts of it will have been referenced
in the calls to add_specific_symbol. */
*buffer_p = buffer;
}
/* See whether a symbol should be stripped or kept
@ -5262,15 +5271,18 @@ copy_main (int argc, char *argv[])
break;
case OPTION_STRIP_SYMBOLS:
add_specific_symbols (optarg, strip_specific_htab);
add_specific_symbols (optarg, strip_specific_htab,
&strip_specific_buffer);
break;
case OPTION_STRIP_UNNEEDED_SYMBOLS:
add_specific_symbols (optarg, strip_unneeded_htab);
add_specific_symbols (optarg, strip_unneeded_htab,
&strip_unneeded_buffer);
break;
case OPTION_KEEP_SYMBOLS:
add_specific_symbols (optarg, keep_specific_htab);
add_specific_symbols (optarg, keep_specific_htab,
&keep_specific_buffer);
break;
case OPTION_LOCALIZE_HIDDEN:
@ -5278,7 +5290,8 @@ copy_main (int argc, char *argv[])
break;
case OPTION_LOCALIZE_SYMBOLS:
add_specific_symbols (optarg, localize_specific_htab);
add_specific_symbols (optarg, localize_specific_htab,
&localize_specific_buffer);
break;
case OPTION_LONG_SECTION_NAMES:
@ -5293,15 +5306,18 @@ copy_main (int argc, char *argv[])
break;
case OPTION_GLOBALIZE_SYMBOLS:
add_specific_symbols (optarg, globalize_specific_htab);
add_specific_symbols (optarg, globalize_specific_htab,
&globalize_specific_buffer);
break;
case OPTION_KEEPGLOBAL_SYMBOLS:
add_specific_symbols (optarg, keepglobal_specific_htab);
add_specific_symbols (optarg, keepglobal_specific_htab,
&keepglobal_specific_buffer);
break;
case OPTION_WEAKEN_SYMBOLS:
add_specific_symbols (optarg, weaken_specific_htab);
add_specific_symbols (optarg, weaken_specific_htab,
&weaken_specific_buffer);
break;
case OPTION_ALT_MACH_CODE:
@ -5588,6 +5604,27 @@ copy_main (int argc, char *argv[])
}
}
if (strip_specific_buffer)
free (strip_specific_buffer);
if (strip_unneeded_buffer)
free (strip_unneeded_buffer);
if (keep_specific_buffer)
free (keep_specific_buffer);
if (localize_specific_buffer)
free (globalize_specific_buffer);
if (globalize_specific_buffer)
free (globalize_specific_buffer);
if (keepglobal_specific_buffer)
free (keepglobal_specific_buffer);
if (weaken_specific_buffer)
free (weaken_specific_buffer);
return 0;
}