intprops-workaround-nvc-22.1-bug.patch

diff --git a/lib/intprops.h b/lib/intprops.h
index 9d10028..1540e3e 100644
--- a/lib/intprops.h
+++ b/lib/intprops.h
@@ -232,7 +232,11 @@
    (A, B, P) work when P is non-null.  */
 /* __builtin_{add,sub}_overflow exists but is not reliable in GCC 5.x and 6.x,
    see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269>.  */
-#if 7 <= __GNUC__ && !defined __ICC
+#ifdef __EDG__
+/* EDG-based compilers like nvc 22.1 cannot add 64-bit signed to unsigned
+   <https://bugs.gnu.org/53256>.  */
+# define _GL_HAS_BUILTIN_ADD_OVERFLOW 0
+#elif 7 <= __GNUC__ && !defined __ICC
 # define _GL_HAS_BUILTIN_ADD_OVERFLOW 1
 #elif defined __has_builtin
 # define _GL_HAS_BUILTIN_ADD_OVERFLOW __has_builtin (__builtin_add_overflow)