m4: crypt_xxpg6.m4: Define _DEFAULT_SOURCE for current glibc #193

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fweimer-rh wants to merge 1 commit into dovecot:main from fweimer-rh:c99

m4/crypt_xpg6.m4

-Original file line number
+Diff line change
@@ Expand Up / @@ -6,6 +6,7 @@ AC_DEFUN([DOVECOT_CRYPT_XPG6], [ @@
           #define _XOPEN_SOURCE 4
           #define _XOPEN_SOURCE_EXTENDED 1
           #define _XOPEN_VERSION 4
+          #define _DEFAULT_SOURCE
           #define _XPG4_2
           #define _XPG6
           #include <unistd.h>
@@ Expand Down @@