gdb: Don't fault for 'maint print psymbols' when using an index

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

diff --git a/gdb/psymtab.c b/gdb/psymtab.c
index e9cc8c3bc6d3173c09bcff246177f9dde9f0dd36..031dbd9c1efe74f35f0ce3de771887eeba37578e 100644 (file)
--- a/gdb/psymtab.c
+++ b/gdb/psymtab.c
@@ -301,14 +301,24 @@ find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
                      struct obj_section *section,
                      struct bound_minimal_symbol msymbol)
 {
-  CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets,
-                                SECT_OFF_TEXT (objfile));
-
-  /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
-     than the later used TEXTLOW/TEXTHIGH one.  */
-
-  if (objfile->partial_symtabs->psymtabs_addrmap != NULL)
+  /* Try just the PSYMTABS_ADDRMAP mapping first as it has better
+     granularity than the later used TEXTLOW/TEXTHIGH one.  However, we need
+     to take care as the PSYMTABS_ADDRMAP can hold things other than partial
+     symtabs in some cases.
+
+     This function should only be called for objfiles that are using partial
+     symtabs, not for objfiles that are using indexes (.gdb_index or
+     .debug_names), however 'maintenance print psymbols' calls this function
+     directly for all objfiles.  If we assume that PSYMTABS_ADDRMAP contains
+     partial symtabs then we will end up returning a pointer to an object
+     that is not a partial_symtab, which doesn't end well.  */
+
+  if (objfile->partial_symtabs->psymtabs != NULL
+      && objfile->partial_symtabs->psymtabs_addrmap != NULL)
     {
+      CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets,
+                                    SECT_OFF_TEXT (objfile));
+
       struct partial_symtab *pst
        = ((struct partial_symtab *)
           addrmap_find (objfile->partial_symtabs->psymtabs_addrmap,