PR libstdc++/87308 adjust regex used in std::any pretty printer

The pretty printer for std::any fails when the contained value is a
locally-defined type, because the name in the debuginfo has
cv-qualifiers and ptr-declarators in different positions. The unexpected
format confuses the printer. This makes the printer's regex handle
either format.

This isn't a complete fix because looking up the contained type fails
when there are two types with the same name (defined in different local
scopes). This applies to all closure types defined in a given function,
as they all appear as "func()::lambda" in the debuginfo names.

	PR libstdc++/87308 (partial)
	* python/libstdcxx/v6/printers.py (StdExpAnyPrinter): Adjust regex to
	work around PR 88166.
	* testsuite/libstdc++-prettyprinters/cxx17.cc: Test std::any
	containing a local type.

From-SVN: r266408

libstdc++-v3/ChangeLog

+2018-11-23  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/87308 (partial)
+	* python/libstdcxx/v6/printers.py (StdExpAnyPrinter): Adjust regex to
+	work around PR 88166.
+	* testsuite/libstdc++-prettyprinters/cxx17.cc: Test std::any
+	containing a local type.
+
 2018-11-22  Marc Glisse  <marc.glisse@inria.fr>
 
 	PR libstdc++/87106

libstdc++-v3/python/libstdcxx/v6/printers.py

@@ -1051,7 +1051,7 @@ class StdExpAnyPrinter(SingleObjContainerPrinter):
             func = gdb.block_for_pc(int(mgr.cast(gdb.lookup_type('intptr_t'))))
             if not func:
                 raise ValueError("Invalid function pointer in %s" % self.typename)
-            rx = r"""({0}::_Manager_\w+<.*>)::_S_manage\({0}::_Op, {0} const\*, {0}::_Arg\*\)""".format(typename)
+            rx = r"""({0}::_Manager_\w+<.*>)::_S_manage\((enum )?{0}::_Op, (const {0}|{0} const) ?\*, (union )?{0}::_Arg ?\*\)""".format(typename)
             m = re.match(rx, func.function.name)
             if not m:
                 raise ValueError("Unknown manager function in %s" % self.typename)

libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx17.cc

@@ -75,6 +75,9 @@ main()
 // { dg-final { regexp-test as2 {std::any containing const char \* = {\[contained value\] = 0x[[:xdigit:]]+ "stringiest"}} } }
   any am = *om;
 // { dg-final { note-test am {std::any containing std::map with 3 elements = {[1] = 2, [3] = 4, [5] = 6}} } }
+  struct local_type { int i = 99; };
+  any al = local_type{};
+// { dg-final { note-test al {std::any containing local_type = {[contained value] = {i = 99}}} } }
 
   struct S { operator int() { throw 42; }};
   variant<float, int, string_view> v0;