Commit Graph

7 Commits

Author SHA1 Message Date
Dimitry Andric
2d23488dac Cherry-pick libcxxrt commit 8a853717e61d5d55cbdf74d9d0a7545da5d5ff92:
Author: David Chisnall <theraven@FreeBSD.org>
Date:   Wed Mar 22 12:27:08 2017 +0000

    Simplify some code.

    realloc() with a null pointer is equivalent to malloc, so we don't need
    to handle the two cases independently.

    Fixes #46

This should help with lang/beignet and other programs, which expect
__cxa_demangle(name, NULL, NULL, &status) to return zero in status.

PR:		213732
MFC after:	3 days
2017-03-22 21:45:42 +00:00
Dimitry Andric
4bf41ce2a6 Revert r256642, not only to reduce diffs against upstream libcxxrt, but
also because it is the wrong approach: comparing typeinfo names deeply
causes trouble if two loaded DSOs use independent types of the same
name.

In addition, this particular change was never merged to FreeBSD 10.x and
9.x, so let's get rid of it before it ends up in an 11.x release.

Discussed with:	theraven, joerg@netbsd
2015-01-31 23:08:29 +00:00
Dimitry Andric
f2dc4184d2 Import libcxxrt master 00bc29eb6513624824a6d7db2ebc768a4216a604.
Interesting fixes:
76584a0  Reorganize code to use only 32bit atomic ops for 32bit platforms
30d2ae5  Implement __cxa_throw_bad_array_new_length

Reviewed by:	bapt
MFC after:	1 month
Differential Revision: https://reviews.freebsd.org/D1390
2014-12-30 20:01:06 +00:00
Dimitry Andric
04461e6012 Since C++ typeinfo objects are currently not guaranteed to be merged at
runtime by the dynamic linker, check for their equality in libcxxrt by
not only comparing the typeinfo's name pointers, but also comparing the
full names, if necessary.  (This is similar to what GNU libstdc++ does
in its default configuration.)  The 'deep' check can be turned off again
by defining LIBCXXRT_MERGED_TYPEINFO, and recompiling libcxxrt.

Reviewed by:	theraven
MFC after:	3 days
2013-10-16 17:00:21 +00:00
David Chisnall
0f9eee39f0 Import a new libcxxrt. This fixes some potential crashing in the demangler.
Approved by:	re (gjb)
MFC after:	1 week
2013-09-23 13:16:21 +00:00
David Chisnall
94e3ee44c3 Import new versions of libcxxrt and libc++.
Please tests any C++ code you care about with -stdlib=libc++!

Approved by:	dim (mentor)
2012-03-14 00:09:36 +00:00
David Chisnall
7a98470824 Import libc++ / libcxxrt into base. Not build by default yet (use
MK_LIBCPLUSPLUS=yes to enable).  This is a work-in-progress.  It works for
me, but is not guaranteed to work for anyone else and may eat your dog.

To build C++ using libc++, add -stdlib=libc++ to your CXX and LD flags.

Bug reports welcome, bug fixes even more welcome...

Approved by:	dim (mentor)
2011-11-25 20:59:04 +00:00