Jonathan Wakely
da6ce35106
libstdc++: Use __builtin_expect in __dynamic_cast
...
The null pointer check is never needed for correct code, only to
gracefully handle undefined cases. Add __builtin_expect to be sure that
we don't pessimize the valid uses.
libstdc++-v3/ChangeLog:
* libsupc++/dyncast.cc (__dynamic_cast): Add __builtin_expect to
precondition check.
2021-08-23 14:45:00 +01:00
Martin Sebor
6d134ca4b9
PR c++/99074 - crash in dynamic_cast<>() on null pointer
...
libstdc++-v3/ChangeLog:
PR c++/99074
* libsupc++/dyncast.cc (__dynamic_cast): Return null when
first argument is null.
gcc/testsuite/ChangeLog:
PR c++/99074
* g++.dg/warn/Wnonnull11.C: New test.
2021-02-23 14:14:20 -07:00
Jakub Jelinek
99dee82307
Update copyright years.
2021-01-04 10:26:59 +01:00
Nathan Sidwell
e6b31fc717
libstdc++: Avoid negating a size_t [pr 94747]
...
Although the code here is well formed, it doesn't show intent well.
The reason checkers trigger on this is that it is a cause of real
bugs. So, negate a ptrdiff_t instead.
* libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to
ptrdiff_t before negation, to show intent more clearly.
2020-05-04 10:08:13 -07:00
Jakub Jelinek
8d9254fc8a
Update copyright years.
...
From-SVN: r279813
2020-01-01 12:51:42 +01:00
Jakub Jelinek
a554497024
Update copyright years.
...
From-SVN: r267494
2019-01-01 13:31:55 +01:00
Jakub Jelinek
85ec4feb11
Update copyright years.
...
From-SVN: r256169
2018-01-03 11:03:58 +01:00
Jakub Jelinek
cbe34bb5ed
Update copyright years.
...
From-SVN: r243994
2017-01-01 13:07:43 +01:00
Jakub Jelinek
818ab71a41
Update copyright years.
...
From-SVN: r232055
2016-01-04 15:30:50 +01:00
Jakub Jelinek
5624e564d2
Update copyright years.
...
From-SVN: r219188
2015-01-05 13:33:28 +01:00
Jason Merrill
4666e1fb92
dyncast.cc (__dynamic_cast): Handle mid-destruction dynamic_cast more gracefully.
...
* libsupc++/dyncast.cc (__dynamic_cast): Handle mid-destruction
dynamic_cast more gracefully.
From-SVN: r215350
2014-09-18 08:34:43 -04:00
Richard Sandiford
aa118a03c4
Update copyright years in libstdc++-v3/
...
From-SVN: r206301
2014-01-02 22:30:10 +00:00
Richard Sandiford
405feeb871
Update copyright in libstdc++-v3.
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From-SVN: r195701
2013-02-03 17:54:05 +00:00
Jason Merrill
62c99ce475
vmi_class_type_info.cc (__do_dyncast): Use src2dst hint to defer searching bases that don't overlap the desired address.
...
* libsupc++/vmi_class_type_info.cc (__do_dyncast): Use src2dst hint
to defer searching bases that don't overlap the desired address.
From-SVN: r149297
2009-07-06 18:13:51 -04:00
Jakub Jelinek
748086b7b2
Licensing changes to GPLv3 resp. GPLv3 with GCC Runtime Exception.
...
From-SVN: r145841
2009-04-09 17:00:19 +02:00
Mark Mitchell
bd994a48f6
array_type_info.cc: Likewise.
...
* libsupc++/array_type_info.cc: Likewise.
* libsupc++/bad_cast.cc: Likewise.
* libsupc++/bad_typeid.cc: Likewise.
* libsupc++/class_type_info.cc: Likewise.
* libsupc++/dyncast.cc: Likewise.
* libsupc++/enum_type_info.cc: Likewise.
* libsupc++/function_type_info.cc: Likewise.
* libsupc++/fundamental_type_info.cc: Likewise.
* libsupc++/pbase_type_info.cc: Likewise.
* libsupc++/pmem_type_info.cc: Likewise.
* libsupc++/pointer_type_info.cc: Likewise.
* libsupc++/si_class_type_info.cc: Likewise.
* libsupc++/vmi_class_type_info.cc: Likewise.
* libsupc++/tinfo.h: Move inline type_info functions here.
* libsupc++/tinfo.cc: Separate type_info classes into their own
files.
* libsupc++/tinfo2.cc: Likewise.
* Makefile.am (sources): Mention new files.
* Makefile.in: Regenerated.
From-SVN: r123042
2007-03-18 22:35:39 +00:00
