PR libstdc++/51649:
* testsuite/libstdc++-prettyprinters/debug.cc: New file.
* testsuite/lib/gdb-test.exp (regexp-test): New proc.
(note-test): Update.
(gdb-test): Handle regexp tests. Add some logging.
* testsuite/libstdc++-prettyprinters/simple.cc: Compile with -O0.
(placeholder, use): Remove.
(main): Add tests for deque, list, map, and set iterators. Add
tests for slist and slist iterator.
* testsuite/libstdc++-prettyprinters/48362.cc (main): Handle __7
namespace.
* python/libstdcxx/v6/printers.py (StdListPrinter.children): Use
the type's _Node typedef.
(StdListIteratorPrinter.to_string): Change how node type is
computed.
(StdSlistPrinter.children): Use the type's _Node typedef.
(StdSlistIteratorPrinter.to_string): Likewise.
(StdRbtreeIteratorPrinter.to_string): Use the type's _Link_type
typedef.
(StdMapPrinter.children): Change how the node's type is computed.
(StdSetPrinter.children): Likewise.
(StdForwardListPrinter.children): Use the type's _Node typedef.
(Printer.add_version): New method.
(Printer.add_container): New method.
(build_libstdcxx_dictionary): Handle __7 and __cxx1998
namespaces.
(find_type): New function.
From-SVN: r183732
3efe2bf72b