PR libstdc++/90682 allow set_terminate(0) and set_unexpected(0)
authorJonathan Wakely <jwakely@redhat.com>
Fri, 31 May 2019 10:35:11 +0000 (11:35 +0100)
committerJonathan Wakely <redi@gcc.gnu.org>
Fri, 31 May 2019 10:35:11 +0000 (11:35 +0100)
commit3228289e1efc9712b12f5ce7d6a0ef5cfca11f0d
tree904ea855a043d873ca2e0eb6ba020f869fb4e4bd
parent3263fb9c6b90b565fc6ca4d2ce9247b97b4027d3
PR libstdc++/90682 allow set_terminate(0) and set_unexpected(0)

Make these functions restore the default handlers when passed a null
pointer. This is consistent with std::pmr::set_default_resource(0), and
also matches the current behaviour of libc++.

In order to avoid duplicating the preprocessor condition from
eh_term_handler.cc more that into a new eh_term_handler.h header and
define a macro that can be used in both eh_term_handler.cc and
eh_terminate.cc.

PR libstdc++/90682
* libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
* libsupc++/eh_term_handler.h: New header defining
_GLIBCXX_DEFAULT_TERM_HANDLER.
* libsupc++/eh_terminate.cc: Include eh_term_handler.h.
(set_terminate): Restore default handler when argument is null.
(set_unexpected): Likewise.
* testsuite/18_support/set_terminate.cc: New test.
* testsuite/18_support/set_unexpected.cc: New test.

From-SVN: r271808
libstdc++-v3/ChangeLog
libstdc++-v3/libsupc++/eh_term_handler.cc
libstdc++-v3/libsupc++/eh_term_handler.h [new file with mode: 0644]
libstdc++-v3/libsupc++/eh_terminate.cc
libstdc++-v3/testsuite/18_support/set_terminate.cc [new file with mode: 0644]
libstdc++-v3/testsuite/18_support/set_unexpected.cc [new file with mode: 0644]