PR c++/15176:

	* NEWS: Update.
	* break-catch-throw.c (compute_exception): New function.
	(exception_funcs): New global.
	(_initialize_break_catch_throw): Create $_exception.
	* cp-abi.c (cplus_type_from_type_info): New function.
	* cp-abi.h (cplus_type_from_type_info): Declare.
	(struct cp_abi_ops) <get_type_from_type_info>: New field.
	* gnu-v3-abi.c (gnuv3_get_typename_from_type_info)
	(gnuv3_get_type_from_type_info): New functions.
	(init_gnuv3_ops): Set get_type_from_type_info ABI field.
gdb/doc
	* gdb.texinfo (Set Catchpoints): Document $_exception.
	(Convenience Vars): Mention $_exception.
gdb/testsuite
	* gdb.base/default.exp: Update for $_exception.
	* gdb.cp/exceptprint.cc: New file.
	* gdb.cp/exceptprint.exp: New file.
	* lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.

2 files changed, 138 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.cp/exceptprint.cc b/gdb/testsuite/gdb.cp/exceptprint.cc
new file mode 100644
index 00000000000..994b5010d69
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/exceptprint.cc
@@ -0,0 +1,65 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2013 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>
+void
+throwit (T val)
+{
+  throw val;
+}
+
+template<typename T>
+void
+rethrowit (T val)
+{
+  try
+    {
+      try
+	{
+	  throwit (val);
+	}
+      catch (...)
+	{
+	  throw;
+	}
+    }
+  catch (...)
+    {
+      // Ignore.
+    }
+}
+
+struct maude
+{
+  int mv;
+
+  maude (int x) : mv (x) { }
+};
+
+int
+main (int argc, char **argv)
+{
+  maude mm (77);
+  maude &mmm (mm);
+
+  rethrowit ("hi bob");
+  rethrowit (23);
+  rethrowit (mm);
+  rethrowit (mmm);
+
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.cp/exceptprint.exp b/gdb/testsuite/gdb.cp/exceptprint.exp
new file mode 100644
index 00000000000..6e03fd9ab55
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/exceptprint.exp
@@ -0,0 +1,73 @@
+# Copyright 2013 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/>.
+
+standard_testfile .cc
+
+if {[skip_cplus_tests]} {
+    return -1
+}
+
+if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug c++}]} {
+    return -1
+}
+
+if {![runto_main]} {
+    return -1
+}
+
+if {![skip_libstdcxx_probe_tests]} {
+    untested "could not find libstdc++ stap probe"
+    return -1
+}
+
+proc do_continue_to_catchpoint {name} {
+    global gdb_prompt
+
+    gdb_test_multiple "continue" $name {
+	-re "Continuing.*Catchpoint \[0-9\].*\r\n$gdb_prompt $" {
+	    pass $name
+	}
+    }
+}
+
+proc do_exceptprint_tests {prefix output} {
+    with_test_prefix $prefix {
+	do_continue_to_catchpoint "continue to throw"
+	gdb_test "print \$_exception" " = $output" \
+	    "print exception value at throw"
+
+	do_continue_to_catchpoint "continue to catch"
+	gdb_test "print \$_exception" " = $output" \
+	    "print exception value at catch"
+	
+	do_continue_to_catchpoint "continue to rethrow"
+	gdb_test "print \$_exception" " = $output" \
+	    "print exception value at rethrow"
+
+	do_continue_to_catchpoint "continue to final catch"
+    }
+}
+
+gdb_test "catch catch" "Catchpoint \[0-9\]+ \\(catch\\)" \
+    "catch catch"
+gdb_test "catch throw" "Catchpoint \[0-9\]+ \\(throw\\)" \
+    "catch throw"
+gdb_test "catch rethrow" "Catchpoint \[0-9\]+ \\(rethrow\\)" \
+    "catch rethrow"
+
+do_exceptprint_tests string "$hex \"hi bob\""
+do_exceptprint_tests int 23
+do_exceptprint_tests struct "{mv = 77}"
+do_exceptprint_tests "reference to struct" "{mv = 77}"