Patch #774665: Make Python LC_NUMERIC agnostic.
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 361d84d..b14dc51 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -3582,7 +3582,7 @@
 	PyOS_snprintf(fmt, sizeof(fmt), "%%%s.%d%c",
 		      (flags&F_ALT) ? "#" : "",
 		      prec, type);
-	PyOS_snprintf(buf, buflen, fmt, x);
+        PyOS_ascii_formatd(buf, buflen, fmt, x);
 	return strlen(buf);
 }