* target-reloc.h (visibility_error): New inline function.

[deliverable/binutils-gdb.git] / gdb / source.c

diff --git a/gdb/source.c b/gdb/source.c
index 7a2829bf77772c8138d72e64e3b1ce87d8cc4de5..209032657163b85a3b87500e082c1c62a0ef80e8 100644 (file)
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -1,7 +1,7 @@
 /* List lines of source files for GDB, the GNU debugger.
    Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
    1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
-   2009 Free Software Foundation, Inc.
+   2009, 2010 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -92,6 +92,8 @@ static struct symtab *current_source_symtab;
 
 static int current_source_line;
 
+static struct program_space *current_source_pspace;
+
 /* Default number of lines to print with commands like "list".
    This is based on guessing how many long (i.e. more than chars_per_line
    characters) lines there will be.  To be completely correct, "list"
@@ -152,6 +154,7 @@ get_current_source_symtab_and_line (void)
 {
   struct symtab_and_line cursal = { 0 };
 
+  cursal.pspace = current_source_pspace;
   cursal.symtab = current_source_symtab;
   cursal.line = current_source_line;
   cursal.pc = 0;
@@ -190,15 +193,17 @@ struct symtab_and_line
 set_current_source_symtab_and_line (const struct symtab_and_line *sal)
 {
   struct symtab_and_line cursal = { 0 };
-  
+
+  cursal.pspace = current_source_pspace;
   cursal.symtab = current_source_symtab;
   cursal.line = current_source_line;
+  cursal.pc = 0;
+  cursal.end = 0;
 
+  current_source_pspace = sal->pspace;
   current_source_symtab = sal->symtab;
   current_source_line = sal->line;
-  cursal.pc = 0;
-  cursal.end = 0;
-  
+
   return cursal;
 }
 
@@ -232,6 +237,7 @@ select_source_symtab (struct symtab *s)
     {
       current_source_symtab = s;
       current_source_line = 1;
+      current_source_pspace = SYMTAB_PSPACE (s);
       return;
     }
 
@@ -245,6 +251,7 @@ select_source_symtab (struct symtab *s)
       sals = decode_line_spec (main_name (), 1);
       sal = sals.sals[0];
       xfree (sals.sals);
+      current_source_pspace = sal.pspace;
       current_source_symtab = sal.symtab;
       current_source_line = max (sal.line - (lines_to_list - 1), 1);
       if (current_source_symtab)
@@ -256,7 +263,7 @@ select_source_symtab (struct symtab *s)
 
   current_source_line = 1;
 
-  for (ofp = object_files; ofp != NULL; ofp = ofp->next)
+  ALL_OBJFILES (ofp)
     {
       for (s = ofp->symtabs; s; s = s->next)
        {
@@ -264,15 +271,19 @@ select_source_symtab (struct symtab *s)
          int len = strlen (name);
          if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
              || strcmp (name, "<<C++-namespaces>>") == 0)))
-           current_source_symtab = s;
+           {
+             current_source_pspace = current_program_space;
+             current_source_symtab = s;
+           }
        }
     }
+
   if (current_source_symtab)
     return;
 
   /* How about the partial symbol tables?  */
 
-  for (ofp = object_files; ofp != NULL; ofp = ofp->next)
+  ALL_OBJFILES (ofp)
     {
       for (ps = ofp->psymtabs; ps != NULL; ps = ps->next)
        {
@@ -293,6 +304,7 @@ select_source_symtab (struct symtab *s)
        }
       else
        {
+         current_source_pspace = current_program_space;
          current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst);
        }
     }
@@ -317,11 +329,13 @@ show_directories (char *ignore, int from_tty)
 void
 forget_cached_source_info (void)
 {
+  struct program_space *pspace;
   struct symtab *s;
   struct objfile *objfile;
   struct partial_symtab *pst;
 
-  for (objfile = object_files; objfile != NULL; objfile = objfile->next)
+  ALL_PSPACES (pspace)
+    ALL_PSPACE_OBJFILES (pspace, objfile)
     {
       for (s = objfile->symtabs; s != NULL; s = s->next)
        {
@@ -693,6 +707,20 @@ openp (const char *path, int opts, const char *string,
 
   /* The open syscall MODE parameter is not specified.  */
   gdb_assert ((mode & O_CREAT) == 0);
+  gdb_assert (string != NULL);
+
+  /* A file with an empty name cannot possibly exist.  Report a failure
+     without further checking.
+
+     This is an optimization which also defends us against buggy
+     implementations of the "stat" function.  For instance, we have
+     noticed that a MinGW debugger built on Windows XP 32bits crashes
+     when the debugger is started with an empty argument.  */
+  if (string[0] == '\0')
+    {
+      errno = ENOENT;
+      return -1;
+    }
 
   if (!path)
     path = ".";