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Fix use of _alloca under g++/clang (mingw/cygwin)

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Peter Dimov
2017-11-01 20:59:34 +02:00
parent 5e5cd0fda5
commit e367d65b6e
1 changed files with 6 additions and 0 deletions
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6
include/boost/system/detail/error_code.ipp
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@ -411,8 +411,14 @@ namespace
}
int num_chars = (buf.size() + 1) * 2;
boost::winapi::LPSTR_ narrow_buffer =
#if defined(__GNUC__)
(boost::winapi::LPSTR_)__builtin_alloca(num_chars);
#else
(boost::winapi::LPSTR_)_alloca(num_chars);
#endif
if (boost::winapi::WideCharToMultiByte(boost::winapi::CP_ACP_, 0,
buf.c_str(), -1, narrow_buffer, num_chars, NULL, NULL) == 0)
{