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;
+};