-Wno-overlength-strings

as per https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/Assumptions
we are officially giving up 509 characters limit of C string
literal length.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61874 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

configure.ac

@@ -770,6 +770,7 @@ AS_IF([test "$GCC:${warnflags+set}:no" = yes::no], [
 		 -Werror=division-by-zero \
 		 -Werror=deprecated-declarations \
 		 -Werror=misleading-indentation \
+		 -Wno-overlength-strings \
 		 -Wno-packed-bitfield-compat \
 		 -Wsuggest-attribute=noreturn \
 		 -Wsuggest-attribute=format \

loadpath.c

@@ -16,12 +16,6 @@
 #define RUBY_REVISION 0
 #include "version.h"
 
-#ifdef __clang__
-#pragma clang diagnostic ignored "-Woverlength-strings"
-#elif defined(__GNUC__) && (__GNUC__ >= 5)
-#pragma GCC diagnostic ignored "-Woverlength-strings"
-#endif
-
 #ifndef RUBY_ARCH
 #define RUBY_ARCH RUBY_PLATFORM
 #endif