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re PR libstdc++/66354 ([UBSAN] stl_algobase.h:708:7: runtime error: null pointer passed as argument)

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PR libstdc++/66354
	* include/bits/stl_algobase.h (__fill_a): Check length before calling
	memset.

From-SVN: r223906
This commit is contained in:
Jonathan Wakely 2015-05-31 23:42:17 +01:00 committed by Jonathan Wakely
parent 1edfb384e8
commit 5d946f4228
2 changed files with 8 additions and 2 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2015-05-31 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/66354
* include/bits/stl_algobase.h (__fill_a): Check length before calling
memset.
2015-05-30 Jonathan Wakely <jwakely@redhat.com>
* include/bits/stl_algobase.h (__equal<true>::equal): Check length

4
libstdc++-v3/include/bits/stl_algobase.h
View File

@ -705,8 +705,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__fill_a(_Tp* __first, _Tp* __last, const _Tp& __c)
{
const _Tp __tmp = __c;
__builtin_memset(__first, static_cast<unsigned char>(__tmp),
__last - __first);
if (const size_t __len = __last - __first)
__builtin_memset(__first, static_cast<unsigned char>(__tmp), __len);
}
/**