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.

1 files changed, 7 insertions, 0 deletions

diff --git a/gdb/cp-abi.h b/gdb/cp-abi.h
index d68e2ec..0b954de 100644
--- a/gdb/cp-abi.h
+++ b/gdb/cp-abi.h
@@ -188,6 +188,12 @@ extern struct value *cplus_typeid (struct value *value);
 
 extern struct type *cplus_typeid_type (struct gdbarch *gdbarch);
 
+/* Given a value which holds a pointer to a std::type_info, return the
+   type which that type_info represents.  Throw an exception if the
+   type cannot be found.  */
+
+extern struct type *cplus_type_from_type_info (struct value *value);
+
 /* Determine if we are currently in a C++ thunk.  If so, get the
    address of the routine we are thunking to and continue to there
    instead.  */
@@ -231,6 +237,7 @@ struct cp_abi_ops
   void (*print_vtable) (struct value *);
   struct value *(*get_typeid) (struct value *value);
   struct type *(*get_typeid_type) (struct gdbarch *gdbarch);
+  struct type *(*get_type_from_type_info) (struct value *value);
   CORE_ADDR (*skip_trampoline) (struct frame_info *, CORE_ADDR);
   int (*pass_by_reference) (struct type *type);
 };