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-rw-r--r--conform/data/unistd.h-data2
1 files changed, 1 insertions, 1 deletions
diff --git a/conform/data/unistd.h-data b/conform/data/unistd.h-data
index 72fbdd62b9..ecefa539f2 100644
--- a/conform/data/unistd.h-data
+++ b/conform/data/unistd.h-data
@@ -1,4 +1,4 @@
-#ifndef ISO
+#if !defined ISO && !defined ISO99 && !defined ISO11
 optional-constant _POSIX_VERSION
 optional-constant _POSIX2_C_VERSION
 optional-constant _XOPEN_VERSION