* dbxread.c (end_psymtab): Only reset texthigh if it's not already

set.  Don't reset our own texthigh, or dependency-only pst's, in
scanning all the rest of the psymtabs.
(process_one_symbol):  Fix comments around N_OBJ, N_OPT, N_UNDF.

* buildsym.h (N_UNDF):  Improve comments.
(N_LSYM, etc):  Skip types without names (":T(0,3)=sfoob...").

gdb/ChangeLog

@@ -1,3 +1,13 @@
+Sun Jun 14 10:55:51 1992  John Gilmore  (gnu at cygnus.com)
+
+	* dbxread.c (end_psymtab):  Only reset texthigh if it's not already
+	set.  Don't reset our own texthigh, or dependency-only pst's, in
+	scanning all the rest of the psymtabs.
+	(process_one_symbol):  Fix comments around N_OBJ, N_OPT, N_UNDF.
+
+	* buildsym.h (N_UNDF):  Improve comments.
+	(N_LSYM, etc):  Skip types without names (":T(0,3)=sfoob...").
+
 Sat Jun 13 11:16:45 1992  Fred Fish  (fnf at cygnus.com)
 
 	* symtab.h (struct symbol):  Add aux_value union for preserving

gdb/dbxread.c

@@ -977,7 +977,6 @@ end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
       LDSYMLEN(pst) = capping_symbol_offset - LDSYMOFF(pst);
   pst->texthigh = capping_text;
 
-/* FIXME, do the N_OBJ symbols fix this?  */
   /* Under Solaris, the N_SO symbols always have a value of 0,
      instead of the usual address of the .o file.  Therefore,
      we have to do some tricks to fill in texthigh and textlow.
@@ -1001,7 +1000,7 @@ end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
      down the partial_symtab_list filling in previous texthighs that
      are still unknown.  */
 
-  if (last_function_name) {
+  if (pst->texthigh == 0 && last_function_name) {
     char *p;
     int n;
     struct minimal_symbol *minsym;
@@ -1045,9 +1044,14 @@ end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
   if (pst->textlow == 0)
     pst->textlow = pst->texthigh;
 
+  /* If we know our own starting text address, then walk through all other
+     psymtabs for this objfile, and if any didn't know their ending text
+     address, set it to our starting address.  Take care to not set our
+     own ending address to our starting address, nor to set addresses on
+     `dependency' files that have both textlow and texthigh zero.  */
   if (pst->textlow) {
     ALL_OBJFILE_PSYMTABS (objfile, p1) {
-      if (p1->texthigh == 0) {
+      if (p1->texthigh == 0  && p1->textlow != 0 && p1 != pst) {
 	p1->texthigh = pst->textlow;
 	/* if this file has only data, then make textlow match texthigh */
 	if (p1->textlow == 0)
@@ -1724,8 +1728,12 @@ process_one_symbol (type, desc, valu, name, offset, objfile)
 	define_symbol (valu, name, desc, type, objfile);
       break;
 
-    case N_OBJ: /* 2 useless types from Solaris */
-    case N_OPT:
+    /* The following symbol types can be ignored.  */
+    case N_OBJ:			/* Solaris 2:  Object file dir and name */
+    case N_OPT:			/* Solaris 2:  Optimization level? */
+    /*   N_UNDF: 		   Solaris 2:  file separator mark */
+    /*   N_UNDF: -- we will never encounter it, since we only process one
+		    file's symbols at once.  */
       break;
       
     /* The following symbol types we don't know how to process.  Handle

gdb/partial-stab.h

@@ -137,8 +137,11 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 	case N_UNDF:
 #ifdef DBXREAD_ONLY
 	  if (processing_acc_compilation && bufp->n_strx == 1) {
-	    /* deal with relative offsets in the string table
-	       used in ELF+STAB under Solaris */
+	    /* Deal with relative offsets in the string table
+	       used in ELF+STAB under Solaris.  If we want to use the
+	       n_strx field, which contains the name of the file,
+	       we must adjust file_string_table_offset *before* calling
+	       SET_NAMESTRING().  */
 	    past_first_source_file = 1;
 	    file_string_table_offset = next_file_string_table_offset;
 	    next_file_string_table_offset =
@@ -315,22 +318,28 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 	  switch (p[1])
 	    {
 	    case 'T':
-	      ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
-				   STRUCT_NAMESPACE, LOC_TYPEDEF,
-				   objfile->static_psymbols, CUR_SYMBOL_VALUE);
-	      if (p[2] == 't')
+	      if (p != namestring)	/* a name is there, not just :T... */
 		{
-		  /* Also a typedef with the same name.  */
 		  ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
-				       VAR_NAMESPACE, LOC_TYPEDEF,
+				       STRUCT_NAMESPACE, LOC_TYPEDEF,
 				       objfile->static_psymbols, CUR_SYMBOL_VALUE);
-		  p += 1;
+		  if (p[2] == 't')
+		    {
+		      /* Also a typedef with the same name.  */
+		      ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+					   VAR_NAMESPACE, LOC_TYPEDEF,
+					   objfile->static_psymbols, CUR_SYMBOL_VALUE);
+		      p += 1;
+		    }
 		}
 	      goto check_enum;
 	    case 't':
-	      ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
-				   VAR_NAMESPACE, LOC_TYPEDEF,
-				   objfile->static_psymbols, CUR_SYMBOL_VALUE);
+	      if (p != namestring)	/* a name is there, not just :T... */
+		{
+		  ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
+				       VAR_NAMESPACE, LOC_TYPEDEF,
+				       objfile->static_psymbols, CUR_SYMBOL_VALUE);
+		}
 	    check_enum:
 	      /* If this is an enumerated type, we need to
 		 add all the enum constants to the partial symbol