tests: extend test coverage of getresuid syscall
* tests/getresugid.c: New file.
* tests/getresuid.c: New file.
* tests/getresuid.test: New test.
* tests/.gitignore: Add getresuid.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add getresuid.test.
(EXTRA_DIST): Add getresugid.c.
diff --git a/tests/.gitignore b/tests/.gitignore
index 87ef8a9..e1491a9 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -62,6 +62,7 @@
getgroups
getgroups32
getrandom
+getresuid
getrusage
getxxid
inet-cmsg