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-rw-r--r--fetchmail.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fetchmail.c b/fetchmail.c
index ed3c32ff..f6f24177 100644
--- a/fetchmail.c
+++ b/fetchmail.c
@@ -88,7 +88,7 @@ static void termhook(); /* forward declaration of exit hook */
* and close the window entirely. But since the interval isn't normally
* going to be less than one second this is not a big issue.
*/
-#if defined(__STDC__)
+#if defined(STDC_HEADERS)
static sig_atomic_t alarm_latch = FALSE;
#else
/* assume int can be written in one atomic operation on non ANSI-C systems */