[Bug symtab/11942] New: Duplicate type_hash when reloading debug info of dwarf4 signatured types.

["dje at google dot com" <sourceware-bugzilla@sourceware.org>]

gdb version: 

When reloading debug information (e.g. because the info got freed due to max-
cache-age), gdb can create a second type_hash table for a signatured type CU, 
and not reuse an existing table.

This can be seen with the following patch:


diff -u -p -r1.439 dwarf2read.c
--- dwarf2read.c        20 Aug 2010 17:16:44 -0000      1.439
+++ dwarf2read.c        23 Aug 2010 21:12:13 -0000
@@ -14203,6 +14203,7 @@ set_die_type (struct die_info *die, stru
   if (cu->type_hash == NULL)
     {
       gdb_assert (cu->per_cu != NULL);
+      gdb_assert (cu->per_cu->type_hash == NULL);
       cu->per_cu->type_hash
        = htab_create_alloc_ex (cu->header.length / 24,
                                offset_and_type_hash,

-- 
           Summary: Duplicate type_hash when reloading debug info of dwarf4
                    signatured types.
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: symtab
        AssignedTo: dje at google dot com
        ReportedBy: dje at google dot com
                CC: gdb-prs at sourceware dot org
  GCC host triplet: amd64-linux


http://sourceware.org/bugzilla/show_bug.cgi?id=11942

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