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make sure that we don't call basic_streambuf::gbump with a value bigger than INT_MAX, since it only takes an int. Related to, but not quite the same as PR33725

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@308880 91177308-0d34-0410-b5e6-96231b3b80d8
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Marshall Clow
2017-07-24 14:05:10 +00:00
parent bfa81b089c
commit 33e24e157e
1 changed files with 2 additions and 1 deletions
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include/streambuf
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@@ -404,7 +404,8 @@ basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n)
{ {
if (__ninp_ < __einp_) if (__ninp_ < __einp_)
{ {
const streamsize __len = _VSTD::min(__einp_ - __ninp_, __n - __i); const streamsize __len = _VSTD::min(static_cast<streamsize>(INT_MAX),
_VSTD::min(__einp_ - __ninp_, __n - __i));
traits_type::copy(__s, __ninp_, __len); traits_type::copy(__s, __ninp_, __len);
__s += __len; __s += __len;
__i += __len; __i += __len;