[PATCH] Implement POSIX API Signature Compliance Tests for stddef.h

[Marçal Comajoan Cara]

This work was part of GCI 2018.
---
 testsuites/psxtests/Makefile.am               |  3 +-
 testsuites/psxtests/psxhdrs/stddef/offsetof.c | 38 +++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)
 create mode 100644 testsuites/psxtests/psxhdrs/stddef/offsetof.c

diff --git a/testsuites/psxtests/Makefile.am b/testsuites/psxtests/Makefile.am
index 1ac5a31df4..887849368f 100644
--- a/testsuites/psxtests/Makefile.am
+++ b/testsuites/psxtests/Makefile.am
@@ -1579,7 +1579,8 @@ lib_a_SOURCES = psxhdrs/devctl/posix_devctl.c \
 	psxhdrs/inttypes/strtoimax.c \
 	psxhdrs/inttypes/strtoumax.c \
 	psxhdrs/inttypes/wcstoimax.c \
-	psxhdrs/inttypes/wcstoumax.c
+	psxhdrs/inttypes/wcstoumax.c \
+	psxhdrs/stddef/offsetof.c
 
 
 ## Not supported by RTEMS, but POSIX API Compliance tests exist.
diff --git a/testsuites/psxtests/psxhdrs/stddef/offsetof.c b/testsuites/psxtests/psxhdrs/stddef/offsetof.c
new file mode 100644
index 0000000000..b3c2a97c71
--- /dev/null
+++ b/testsuites/psxtests/psxhdrs/stddef/offsetof.c
@@ -0,0 +1,38 @@
+/**
+ *  @file
+ *  @brief offsetof() API Conformance Test
+ */
+
+/*
+ *  COPYRIGHT (c) 2018.
+ *  Marçal Comajoan Cara
+ *
+ *  Permission to use, copy, modify, and/or distribute this software
+ *  for any purpose with or without fee is hereby granted.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ *  WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ *  WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
+ *  BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
+ *  OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ *  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ *  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stddef.h>
+
+int test( void );
+
+int test( void )
+{
+  struct S {
+    char c;
+    double d;
+  };
+
+  return offsetof(struct S, d);
+}
-- 
2.19.2