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Diffstat (limited to 'src/include/port/pg_iovec.h')
-rw-r--r--src/include/port/pg_iovec.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/port/pg_iovec.h b/src/include/port/pg_iovec.h
index 05d59e99fb6..88f6615dbc6 100644
--- a/src/include/port/pg_iovec.h
+++ b/src/include/port/pg_iovec.h
@@ -39,13 +39,13 @@ struct iovec
/* Define a reasonable maximum that is safe to use on the stack. */
#define PG_IOV_MAX Min(IOV_MAX, 32)
-#ifdef HAVE_PREADV
+#if HAVE_DECL_PREADV
#define pg_preadv preadv
#else
extern ssize_t pg_preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset);
#endif
-#ifdef HAVE_PWRITEV
+#if HAVE_DECL_PWRITEV
#define pg_pwritev pwritev
#else
extern ssize_t pg_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset);