FreeChainXenon/binutils-gdb
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Display null bytes in DWARF debug info

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binutils/

	PR binutils/14420
	* dwarf.c (process_abbrev_section): Add attribute terminator.
	Warn missing section terminator.
	(get_FORM_name): Special check for 0 value.
	(get_AT_name): Likewise.
	(process_debug_info): Display zero abbrev number.  Check
	attribute terminator.

binutils/testsuite/

	PR binutils/14420
	* binutils-all/i386/compressed-1a.d: Updated.
	* binutils-all/objdump.W: Likewise.
	* binutils-all/readelf.wa: Likewise.
	* binutils-all/x86-64/compressed-1a.d: Likewise.

gas/testsuite/

	PR binutils/14420
	* gas/elf/dwarf2-1.d: Updated.
	* gas/elf/dwarf2-2.d: Likwise.
	* gas/i386/dw2-compress-1.d: Likwise.
This commit is contained in:
H.J. Lu 2012-08-02 13:42:59 +00:00
parent ccce17b060
commit 399c99f739
11 changed files with 69 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

23
binutils/dwarf.c
View file

@ -647,12 +647,14 @@ process_abbrev_section (unsigned char *start, unsigned char *end)
form = read_leb128 (start, & bytes_read, 0);
start += bytes_read;
if (attribute != 0)
add_abbrev_attr (attribute, form);
add_abbrev_attr (attribute, form);
}
while (attribute != 0);
}
/* Report the missing single zero which ends the section. */
error (_(".debug_abbrev section not zero terminated\n"));
return NULL;
}
@ -675,8 +677,12 @@ get_TAG_name (unsigned long tag)
static const char *
get_FORM_name (unsigned long form)
{
const char *name = get_DW_FORM_name (form);
const char *name;
if (form == 0)
return "DW_FORM value: 0";
name = get_DW_FORM_name (form);
if (name == NULL)
{
static char buffer[100];
@ -1860,6 +1866,9 @@ get_AT_name (unsigned long attribute)
{
const char *name;
if (attribute == 0)
return "DW_AT value: 0";
/* One value is shared by the MIPS and HP extensions: */
if (attribute == DW_AT_MIPS_fde)
return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable";
@ -2161,6 +2170,10 @@ process_debug_info (struct dwarf_section *section,
break;
}
if (!do_loc && die_offset >= dwarf_start_die)
printf (_(" <%d><%lx>: Abbrev Number: 0\n"),
level, die_offset);
--level;
if (level < 0)
{
@ -2238,7 +2251,9 @@ process_debug_info (struct dwarf_section *section,
break;
}
for (attr = entry->first_attr; attr; attr = attr->next)
for (attr = entry->first_attr;
attr && attr->attribute;
attr = attr->next)
{
debug_info *arg;