WASI libc prototype implementation.

[wasi-libc.git] / libc-top-half / musl / include / stddef.h

diff --git a/libc-top-half/musl/include/stddef.h b/libc-top-half/musl/include/stddef.h
new file mode 100644 (file)
index 0000000..109ca9a
--- /dev/null
+++ b/libc-top-half/musl/include/stddef.h
@@ -0,0 +1,37 @@
+#ifdef __wasilibc_unmodified_upstream
+#ifndef _STDDEF_H
+#define _STDDEF_H
+
+#ifdef __cplusplus
+#define NULL 0L
+#else
+#define NULL ((void*)0)
+#endif
+
+#define __NEED_ptrdiff_t
+#define __NEED_size_t
+#define __NEED_wchar_t
+#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
+#define __NEED_max_align_t
+#endif
+
+#include <bits/alltypes.h>
+
+#if __GNUC__ > 3
+#define offsetof(type, member) __builtin_offsetof(type, member)
+#else
+#define offsetof(type, member) ((size_t)( (char *)&(((type *)0)->member) - (char *)0 ))
+#endif
+
+#endif
+#else
+
+/* Just use the compiler's stddef.h. */
+#include_next <stddef.h>
+
+/* Define musl's include guard, in case any code depends on that. */
+#if defined(__STDDEF_H) && !defined(_STDDEF_H)
+#define _STDDEF_H
+#endif
+
+#endif