Created attachment 7020 [details] breakpoint trace It takes minutes for GDB to find a symbol (vol::content_lh_key in this case) defined in a global namespace unless I prefix the symbol with :: It seems to search for vol in the namespaces of all classes that the current class inherits from. This is ok, but it seems to repeat the search on the same symbol many times over. I ran gdb against gdb and capture a bunch of stack traces during the symbol lookup. The file is attached. break cp_lookup_symbol_in_namespace silent bt 4 print "\n\n" cont end
The following diff works around the problem for me by disabling lookup in base classes: --- gdb-7.6~20130417/gdb/cp-namespace.c 2013-03-18 02:20:02.000000000 -0700 +++ gdb-7.6-mine/gdb/cp-namespace.c 2013-05-09 22:32:17.907659782 -0700 @@ -808,9 +808,7 @@ if (sym != NULL) return sym; - /* If no matching symbols were found, try searching any - base classes. */ - return find_symbol_in_baseclass (parent_type, nested_name, block); + return NULL; } case TYPE_CODE_FUNC:
Does this patch help at all? http://sourceware.org/ml/gdb-patches/2013-05/msg01097.html