bpo-30797, bpo-30694: Avoid _GNU_SOURCE redefined warning in xmlparse.c (#2615)

diff --git a/Modules/expat/xmlparse.c b/Modules/expat/xmlparse.c
index 76f078e2505f90bbf78a66df14e3a7fec0f46540..daec151e232f1c3185dab946a2e48f98cd09232f 100644 (file)
--- a/Modules/expat/xmlparse.c
+++ b/Modules/expat/xmlparse.c
@@ -4,7 +4,7 @@
    77fea421d361dca90041d0040ecf1dca651167fadf2af79e990e35168d70d933 (2.2.1+)
 */
 
-#define _GNU_SOURCE                     /* syscall prototype */
+#define _GNU_SOURCE 1                   /* syscall prototype */
 
 #include <stddef.h>
 #include <string.h>                     /* memset(), memcpy() */