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system_error: provide a thread safe stringification for Windows

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Provide a strerror_r replacement for Windows.  This is needed to build
libc++ for Windows with threading.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@290851 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2017-01-03 02:00:33 +00:00
parent 1d19237a46
commit ba161f4034
1 changed files with 10 additions and 2 deletions
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12
src/system_error.cpp
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@@ -65,8 +65,16 @@ constexpr size_t strerror_buff_size = 1024;
string do_strerror_r(int ev);
#if defined(__linux__) && !defined(_LIBCPP_HAS_MUSL_LIBC) \
&& (!defined(__ANDROID__) || __ANDROID_API__ >= 23)
#if defined(_WIN32)
string do_strerror_r(int ev) {
char buffer[strerror_buff_size];
if (::strerror_s(buffer, strerror_buff_size, ev) == 0)
return string(buffer);
std::snprintf(buffer, strerror_buff_size, "unknown error %d", ev);
return string(buffer);
}
#elif defined(__linux__) && !defined(_LIBCPP_HAS_MUSL_LIBC) && \
(!defined(__ANDROID__) || __ANDROID_API__ >= 23)
// GNU Extended version
string do_strerror_r(int ev) {
char buffer[strerror_buff_size];