Fix Libc++ build with MinGW64

Summary: This patch corrects the build errors I encountered when building on MinGW64.

Reviewers: mati865, rnk, compnerd, smeenai, bcraig

Reviewed By: mati865, smeenai

Subscribers: martell, chapuni, cfe-commits

Differential Revision: https://reviews.llvm.org/D33082

llvm-svn: 304360

2 files changed, 24 insertions, 11 deletions

diff --git a/libcxx/src/support/win32/locale_win32.cpp b/libcxx/src/support/win32/locale_win32.cpp
index 28cb4491781..13a6eaedacb 100644
--- a/libcxx/src/support/win32/locale_win32.cpp
+++ b/libcxx/src/support/win32/locale_win32.cpp
@@ -34,6 +34,18 @@ locale_t uselocale( locale_t newloc )
     // uselocale returns the old locale_t
     return old_locale;
 }
+
+decltype(MB_CUR_MAX) MB_CUR_MAX_L( locale_t __l )
+{
+#if defined(_LIBCPP_MSVCRT)
+  return ___mb_cur_max_l_func(__l);
+#else
+  __libcpp_locale_guard __current(__l);
+  return MB_CUR_MAX;
+#endif
+}
+
+
 lconv *localeconv_l( locale_t loc )
 {
     __libcpp_locale_guard __current(loc);
@@ -109,3 +121,15 @@ int vasprintf_l( char **ret, locale_t loc, const char *format, va_list ap )
     __libcpp_locale_guard __current(loc);
     return vasprintf( ret, format, ap );
 }
+
+#if !defined(_LIBCPP_MSVCRT)
+float strtof_l(const char* nptr, char** endptr, locale_t loc) {
+  __libcpp_locale_guard __current(loc);
+  return strtof(nptr, endptr);
+}
+
+long double strtold_l(const char* nptr, char** endptr, locale_t loc) {
+  __libcpp_locale_guard __current(loc);
+  return strtold(nptr, endptr);
+}
+#endif
diff --git a/libcxx/src/support/win32/support.cpp b/libcxx/src/support/win32/support.cpp
index e989681a6d5..dbd1c4c418a 100644
--- a/libcxx/src/support/win32/support.cpp
+++ b/libcxx/src/support/win32/support.cpp
@@ -15,17 +15,6 @@
 #include <cstring> // strcpy, wcsncpy
 #include <cwchar>  // mbstate_t
 
-// Some of these functions aren't standard or if they conform, the name does not.
-
-int asprintf(char **sptr, const char *__restrict format, ...)
-{
-    va_list ap;
-    va_start(ap, format);
-    int result;
-    result = vasprintf(sptr, format, ap);
-    va_end(ap);
-    return result;
-}
 
 // Like sprintf, but when return value >= 0 it returns
 // a pointer to a malloc'd string in *sptr.