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Diffstat (limited to 'src/runtime/testdata/testprogcgo/stackswitch.c')
-rw-r--r--src/runtime/testdata/testprogcgo/stackswitch.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/testdata/testprogcgo/stackswitch.c b/src/runtime/testdata/testprogcgo/stackswitch.c
index 2395cda568..2f79cc28ed 100644
--- a/src/runtime/testdata/testprogcgo/stackswitch.c
+++ b/src/runtime/testdata/testprogcgo/stackswitch.c
@@ -7,7 +7,7 @@
// Required for darwin ucontext.
#define _XOPEN_SOURCE
// Required for netbsd stack_t if _XOPEN_SOURCE is set.
-#define _XOPEN_SOURCE_EXTENDED
+#define _XOPEN_SOURCE_EXTENDED 1
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#include <assert.h>