tests: extend test coverage of getresuid32 syscall

* tests/getresuid32.c: New file.
* tests/getresuid32.test: New test.
* tests/.gitignore: Add getresuid32.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add getresuid32.test.
diff --git a/tests/.gitignore b/tests/.gitignore
index e1491a9..9c46400 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -63,6 +63,7 @@
 getgroups32
 getrandom
 getresuid
+getresuid32
 getrusage
 getxxid
 inet-cmsg
diff --git a/tests/Makefile.am b/tests/Makefile.am
index a29e71a..aa1d813 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -115,6 +115,7 @@
 	getgroups32 \
 	getrandom \
 	getresuid \
+	getresuid32 \
 	getrusage \
 	getxxid \
 	inet-cmsg \
@@ -352,6 +353,7 @@
 	getgroups32.test \
 	getrandom.test \
 	getresuid.test \
+	getresuid32.test \
 	getrusage.test \
 	getxxid.test \
 	inet-cmsg.test \
diff --git a/tests/getresuid32.c b/tests/getresuid32.c
new file mode 100644
index 0000000..3154e27
--- /dev/null
+++ b/tests/getresuid32.c
@@ -0,0 +1,15 @@
+#include "tests.h"
+#include <sys/syscall.h>
+
+#ifdef __NR_getresuid32
+
+# define SYSCALL_NR	__NR_getresuid32
+# define SYSCALL_NAME	"getresuid32"
+# define UGID_TYPE	int
+# include "getresugid.c"
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_getresuid32")
+
+#endif
diff --git a/tests/getresuid32.test b/tests/getresuid32.test
new file mode 100755
index 0000000..fdc76a3
--- /dev/null
+++ b/tests/getresuid32.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check getresuid32 syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a27