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Diffstat (limited to 'src/os/unix/ngx_linux_config.h')
-rw-r--r--src/os/unix/ngx_linux_config.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/os/unix/ngx_linux_config.h b/src/os/unix/ngx_linux_config.h
index 8467a97fe..72594bac0 100644
--- a/src/os/unix/ngx_linux_config.h
+++ b/src/os/unix/ngx_linux_config.h
@@ -22,6 +22,7 @@
#include <stddef.h> /* offsetof() */
#include <stdio.h>
#include <stdlib.h>
+#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <signal.h>