http://sourceware.org/ml/gdb-patches/2010-12/msg00264.html

Index: gdb-7.2.50.20110206/gdb/linespec.c
===================================================================
--- gdb-7.2.50.20110206.orig/gdb/linespec.c	2011-02-06 23:06:26.000000000 +0100
+++ gdb-7.2.50.20110206/gdb/linespec.c	2011-02-06 23:08:23.000000000 +0100
@@ -1057,6 +1057,10 @@ locate_first_half (char **argptr, int *i
 	    error (_("malformed template specification in command"));
 	  p = temp_end;
 	}
+
+      if (p[0] == '(')
+	p = find_method_overload_end (p);
+
       /* Check for a colon and a plus or minus and a [ (which
          indicates an Objective-C method).  */
       if (is_objc_method_format (p))
@@ -1272,8 +1276,10 @@ decode_compound (char **argptr, int funf
         find_method.
 
      2) AAA::inA isn't the name of a class.  In that case, either the
-        user made a typo or AAA::inA is the name of a namespace.
-        Either way, we just look up AAA::inA::fun with lookup_symbol.
+        user made a typo, AAA::inA is the name of a namespace, or it is
+        the name of a minimal symbol.
+        We just look up AAA::inA::fun with lookup_symbol.  If that fails,
+        try lookup_minimal_symbol.
 
      Thus, our first task is to find everything before the last set of
      double-colons and figure out if it's the name of a class.  So we
@@ -1294,6 +1300,8 @@ decode_compound (char **argptr, int funf
 
   while (1)
     {
+      static char *break_characters = " \t\'(";
+
       /* Move pointer up to next possible class/namespace token.  */
 
       p = p2 + 1;	/* Restart with old value +1.  */
@@ -1304,8 +1312,7 @@ decode_compound (char **argptr, int funf
       /* PASS2: p2->"::fun", p->":fun" */
 
       /* Move pointer ahead to next double-colon.  */
-      while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')
-	     && (*p != '('))
+      while (*p && strchr (break_characters, *p) == NULL)
 	{
 	  if (current_language->la_language == language_cplus)
 	    p += cp_validate_operator (p);
@@ -1329,9 +1336,12 @@ decode_compound (char **argptr, int funf
 	  else if ((p[0] == ':') && (p[1] == ':'))
 	    break;	/* Found double-colon.  */
 	  else
-	    /* PASS2: We'll keep getting here, until p->"", at which point
-	       we exit this loop.  */
-	    p++;
+	    {
+	      /* PASS2: We'll keep getting here, until P points to one of the
+		 break characters, at which point we exit this loop.  */
+	      if (strchr (break_characters, *p) == NULL)
+		p++;
+	    }
 	}
 
       if (*p != ':')
@@ -1340,7 +1350,7 @@ decode_compound (char **argptr, int funf
 			   unsuccessfully all the components of the
 			   string, and p->""(PASS2).  */
 
-      /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e
+      /* We get here if p points to one of the break characters or ""(i.e
 	 string ended).  */
       /* Save restart for next time around.  */
       p2 = p;
@@ -1491,6 +1501,18 @@ decode_compound (char **argptr, int funf
   /* We couldn't find a class, so we're in case 2 above.  We check the
      entire name as a symbol instead.  */
 
+  if (current_language->la_language == language_cplus
+      || current_language->la_language == language_java)
+    {
+      char *paren = strchr (p, '(');
+      if (paren != NULL)
+	p = find_method_overload_end (paren);
+
+      /* Make sure we keep important kewords like "const" */
+      if (strncmp (p, " const", 6) == 0)
+	p += 6;
+    }
+
   copy = (char *) alloca (p - saved_arg2 + 1);
   memcpy (copy, saved_arg2, p - saved_arg2);
   /* Note: if is_quoted should be true, we snuff out quote here
@@ -1503,9 +1525,18 @@ decode_compound (char **argptr, int funf
   sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0);
   if (sym)
     return symbol_found (funfirstline, canonical, copy, sym, NULL);
+  else
+    {
+      struct minimal_symbol *msym;
+
+      /* Couldn't find any interpretation as classes/namespaces.  As a last
+	 resort, try the minimal symbol tables.  */
+      msym = lookup_minimal_symbol (copy, NULL, NULL);
+      if (msym != NULL)
+	return minsym_found (funfirstline, msym);
+    }    
 
-  /* Couldn't find any interpretation as classes/namespaces, so give
-     up.  The quotes are important if copy is empty.  */
+  /* Couldn't find a minimal symbol, either, so give up.  */
   if (not_found_ptr)
     *not_found_ptr = 1;
   cplusplus_error (the_real_saved_arg,
Index: gdb-7.2.50.20110206/gdb/testsuite/gdb.cp/pr12273.cc
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.2.50.20110206/gdb/testsuite/gdb.cp/pr12273.cc	2011-02-06 23:07:19.000000000 +0100
@@ -0,0 +1,37 @@
+/* This test case is part of GDB, the GNU debugger.
+
+   Copyright 2010 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+template <typename T>
+class GDB
+{
+ public:
+   static int simple (void) { return 0; }
+   static int harder (T a) { return 1; }
+   template <typename X>
+   static X even_harder (T a) { return static_cast<X> (a); }
+   int operator == (GDB const& other)
+   { return 1; }
+};
+
+int main(int argc, char **argv)
+{
+   GDB<int> a, b;
+   if (a == b)
+     return GDB<char>::harder('a') + GDB<int>::harder(3)
+	+ GDB<char>::even_harder<int> ('a');
+   return GDB<int>::simple ();
+}
Index: gdb-7.2.50.20110206/gdb/testsuite/gdb.cp/pr12273.exp
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ gdb-7.2.50.20110206/gdb/testsuite/gdb.cp/pr12273.exp	2011-02-06 23:07:19.000000000 +0100
@@ -0,0 +1,46 @@
+# Copyright 2010 Free Software Foundation, Inc.
+#
+# Contributed by Red Hat, originally written by Keith Seitz.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the gdb testsuite.
+
+if {[skip_cplus_tests]} { continue }
+
+set testfile "pr12273"
+# Do NOT compile with debug flag.
+prepare_for_testing pr12273 $testfile $testfile.cc {c++}
+
+gdb_test_no_output "set language c++"
+
+# A list of minimal symbol names to check.
+# Note that GDB<char>::even_harder<int>(char) is quoted and includes
+# the return type.  This is necessary because this is the demangled name
+# of the minimal symbol.
+set min_syms [list \
+		  "GDB<int>::operator ==" \
+		  "GDB<int>::operator==(GDB<int> const&)" \
+		  "GDB<char>::harder(char)" \
+		  "GDB<int>::harder(int)" \
+		  {"int GDB<char>::even_harder<int>(char)"} \
+		  "GDB<int>::simple()"]
+
+foreach sym $min_syms {
+    if {[gdb_breakpoint $sym]} {
+	pass "setting breakpoint at $sym"
+    }
+}
+
+gdb_exit