2002-08-13 David Carlton <carlton@math.stanford.edu>

	* dwarf2read.c (dwarf2_build_psymtabs): Check that
	dwarf_line_offset is nonzero before creating dwarf_line_buffer.
	(read_file_scope): Check that line_header is nonzero before
	decoding macro information.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index fedfe81..c72abc0 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2002-08-20  David Carlton  <carlton@math.stanford.edu>
+
+       * dwarf2read.c (dwarf2_build_psymtabs): Check that
+       dwarf_line_offset is nonzero before creating dwarf_line_buffer.
+       (read_file_scope): Check that line_header is nonzero before
+       decoding macro information.
+
 2002-08-20  Mark Kettenis  <kettenis@gnu.org>
 
        * i386-tdep.h (FP_REGNUM_P): Change such that we don't incorrectly

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 75ee279..0d96e1f 100644 (file)
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -1009,9 +1009,13 @@ dwarf2_build_psymtabs (struct objfile *objfile, int mainline)
   dwarf_abbrev_buffer = dwarf2_read_section (objfile,
                                             dwarf_abbrev_offset,
                                             dwarf_abbrev_size);
-  dwarf_line_buffer = dwarf2_read_section (objfile,
-                                          dwarf_line_offset,
-                                          dwarf_line_size);
+
+  if (dwarf_line_offset)
+    dwarf_line_buffer = dwarf2_read_section (objfile,
+                                            dwarf_line_offset,
+                                            dwarf_line_size);
+  else
+    dwarf_line_buffer = NULL;
 
   if (dwarf_str_offset)
     dwarf_str_buffer = dwarf2_read_section (objfile,
@@ -1808,7 +1812,7 @@ read_file_scope (struct die_info *die, struct objfile *objfile,
      header, so we can only read it if we've read the header
      successfully.  */
   attr = dwarf_attr (die, DW_AT_macro_info);
-  if (attr)
+  if (attr && line_header)
     {
       unsigned int macro_offset = DW_UNSND (attr);
       dwarf_decode_macros (line_header, macro_offset,