1 files changed, 18 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/include/errno.h b/libc-top-half/musl/src/include/errno.h
new file mode 100644
index 0000000..70941d8
--- /dev/null
+++ b/libc-top-half/musl/src/include/errno.h
@@ -0,0 +1,18 @@
+#ifndef ERRNO_H
+#define ERRNO_H
+
+#include "../../include/errno.h"
+
+#ifdef __wasilibc_unmodified_upstream // Use alternate WASI libc headers
+#ifdef __GNUC__
+__attribute__((const))
+#endif
+hidden int *___errno_location(void);
+
+#undef errno
+#define errno (*___errno_location())
+#else
+// Use the WASI libc errno.
+#endif
+
+#endif