Implement LWG issue 1169. num_get not fully compatible with strto*

Use strtof and strtod for floats and doubles respectively instead of
always using strtold. The other parts of the change are already implemented
in libc++.

This patch also has a drive by fix to wbuffer_convert::underflow() which
prevents it from calling memmove(buff, null, 0).

llvm-svn: 273106

1 files changed, 15 insertions, 5 deletions

diff --git a/libcxx/include/support/solaris/xlocale.h b/libcxx/include/support/solaris/xlocale.h
index 62b0d74a6d2..e20ef7a6e53 100644
--- a/libcxx/include/support/solaris/xlocale.h
+++ b/libcxx/include/support/solaris/xlocale.h
@@ -44,11 +44,6 @@ long strtol_l(const char *__nptr, char **__endptr,
   return strtol(__nptr, __endptr, __base);
 }
 static inline
-long double strtold_l(const char *__nptr, char **__endptr,
-    locale_t __loc) {
-  return strtold(__nptr, __endptr);
-}
-static inline
 unsigned long long strtoull_l(const char *__nptr, char **__endptr,
     int __base, locale_t __loc) {
   return strtoull(__nptr, __endptr, __base);
@@ -58,6 +53,21 @@ unsigned long strtoul_l(const char *__nptr, char **__endptr,
     int __base, locale_t __loc) {
   return strtoul(__nptr, __endptr, __base);
 }
+static inline
+float strtof_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtof(__nptr, __endptr);
+}
+static inline
+double strtod_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtod(__nptr, __endptr);
+}
+static inline
+long double strtold_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtold(__nptr, __endptr);
+}
 
 
 #ifdef __cplusplus