From aaa0cf5448fc55e5b2bb925d0ac41779d8b50b56 Mon Sep 17 00:00:00 2001
From: Jesse Rosenstock <jmr@google.com>
Date: Wed, 29 Jul 2020 22:41:46 +0200
Subject: [PATCH] Add err tests for bitfield width errors

! ../../bin/cc65 -o ../../testwrk/err/bitfield-named-zero-width.s bitfield-named-zero-width.c
bitfield-named-zero-width.c(27): Error: Zero width for named bit-field
! ../../bin/cc65 -o ../../testwrk/err/bitfield-negative-width.s bitfield-negative-width.c
bitfield-negative-width.c(26): Error: Negative width in bit-field
! ../../bin/cc65 -o ../../testwrk/err/bitfield-too-wide.s bitfield-too-wide.c
bitfield-too-wide.c(26): Error: Width of bit-field exceeds its type
---
 test/err/bitfield-named-zero-width.c | 29 ++++++++++++++++++++++++++++
 test/err/bitfield-negative-width.c   | 27 ++++++++++++++++++++++++++
 test/err/bitfield-too-wide.c         | 27 ++++++++++++++++++++++++++
 3 files changed, 83 insertions(+)
 create mode 100644 test/err/bitfield-named-zero-width.c
 create mode 100644 test/err/bitfield-negative-width.c
 create mode 100644 test/err/bitfield-too-wide.c

diff --git a/test/err/bitfield-named-zero-width.c b/test/err/bitfield-named-zero-width.c
new file mode 100644
index 000000000..b9b9db88d
--- /dev/null
+++ b/test/err/bitfield-named-zero-width.c
@@ -0,0 +1,29 @@
+/*
+  Copyright 2020 Google LLC
+
+  This software is provided 'as-is', without any express or implied
+  warranty. In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+  Test of bit-field with zero-width named field
+*/
+
+struct s {
+    unsigned int x : 4;
+    unsigned int y : 0;
+    unsigned int z : 4;
+};
diff --git a/test/err/bitfield-negative-width.c b/test/err/bitfield-negative-width.c
new file mode 100644
index 000000000..dd83b3fc4
--- /dev/null
+++ b/test/err/bitfield-negative-width.c
@@ -0,0 +1,27 @@
+/*
+  Copyright 2020 Google LLC
+
+  This software is provided 'as-is', without any express or implied
+  warranty. In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+  Test of bit-field with negative width.
+*/
+
+struct s {
+    unsigned int x : -1;
+};
diff --git a/test/err/bitfield-too-wide.c b/test/err/bitfield-too-wide.c
new file mode 100644
index 000000000..6c9c229fc
--- /dev/null
+++ b/test/err/bitfield-too-wide.c
@@ -0,0 +1,27 @@
+/*
+  Copyright 2020 Google LLC
+
+  This software is provided 'as-is', without any express or implied
+  warranty. In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+  Test of bit-field with too large width.
+*/
+
+struct s {
+    unsigned int x : 17;
+};