Approved by ezannoni@redhat.com:

	2002-05-12  Fred Fish  <fnf@redhat.com>
	* symfile.c (default_symfile_offsets): Arrange for uninitialized
	sect_index_xxx members to index the first slot in section_offsets
	if all of the section_offsets are zero.

1 files changed, 28 insertions, 0 deletions

diff --git a/gdb/symfile.c b/gdb/symfile.c
index 7c7141d..8303f3c 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -539,6 +539,34 @@ default_symfile_offsets (struct objfile *objfile,
   if (sect) 
     objfile->sect_index_rodata = sect->index;
 
+  /* This is where things get really weird...  We MUST have valid
+     indices for the various sect_index_* members or gdb will abort.
+     So if for example, there is no ".text" section, we have to
+     accomodate that.  Except when explicitly adding symbol files at
+     some address, section_offsets contains nothing but zeros, so it
+     doesn't matter which slot in section_offsets the individual
+     sect_index_* members index into.  So if they are all zero, it is
+     safe to just point all the currently uninitialized indices to the
+     first slot. */
+
+  for (i = 0; i < objfile->num_sections; i++)
+    {
+      if (ANOFFSET (objfile->section_offsets, i) != 0)
+	{
+	  break;
+	}
+    }
+  if (i == objfile->num_sections)
+    {
+      if (objfile->sect_index_text == -1)
+	objfile->sect_index_text = 0;
+      if (objfile->sect_index_data == -1)
+	objfile->sect_index_data = 0;
+      if (objfile->sect_index_bss == -1)
+	objfile->sect_index_bss = 0;
+      if (objfile->sect_index_rodata == -1)
+	objfile->sect_index_rodata = 0;
+    }
 }
 
 /* Process a symbol file, as either the main file or as a dynamically