catch out of range string offset in corrupt stab entry

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index f314b1c..304745e 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,8 @@
+2000-03-27  Nick Clifton  <nickc@cygnus.com>
+
+       * rddbg.c (read_section_stabs_debugging_info): Catch out of range
+       string offsets in corrupt stabs entries.
+
 2000-03-27  Alan Modra  <alan@linuxcare.com>
 
        * readelf.c: Include elf/avr.h

diff --git a/binutils/rddbg.c b/binutils/rddbg.c
index 9428c37..e26056e 100644 (file)
--- a/binutils/rddbg.c
+++ b/binutils/rddbg.c
@@ -185,7 +185,17 @@ read_section_stabs_debugging_info (abfd, syms, symcount, dhandle, pfound)
                  char *f, *s;
 
                  f = NULL;
+                 
+                 if (stroff + strx > strsize)
+                   {
+                     fprintf (stderr, "%s: %s: stab entry %d is corrupt, strx = 0x%x, type = %d\n",
+                              bfd_get_filename (abfd), names[i].secname,
+                              (stab - stabs) / 12, strx, type);
+                     continue;
+                   }
+                 
                  s = (char *) strings + stroff + strx;
+                 
                  while (s[strlen (s) - 1] == '\\'
                         && stab + 12 < stabs + stabsize)
                    {