unqual: add testcases

Add some testcases related to qualifier dropping / lvalue conversion.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

4 files changed, 75 insertions, 0 deletions

diff --git a/validation/eval/unqual-comma.c b/validation/eval/unqual-comma.c
new file mode 100644
index 00000000..e06586cd
--- /dev/null
+++ b/validation/eval/unqual-comma.c
@@ -0,0 +1,13 @@
+#define __unqual_typeof(x) typeof(((void)0, (x)))
+
+int *foo(volatile int x);
+int *foo(volatile int x)
+{
+	extern __unqual_typeof(x) y;
+	return &y;
+}
+
+/*
+ * check-name: unqual-comma
+ * check-known-to-fail
+ */
diff --git a/validation/eval/unqual-postop.c b/validation/eval/unqual-postop.c
new file mode 100644
index 00000000..fb3082dc
--- /dev/null
+++ b/validation/eval/unqual-postop.c
@@ -0,0 +1,23 @@
+static void test_volatile(void)
+{
+	volatile int x = 0;
+	int *pp;
+
+	typeof(++x)		v1; pp = &v1;	// KO
+	typeof(x++)		v2; pp = &v2;	// KO
+}
+
+/*
+ * check-name: unqual-postop
+ * check-command: sparse -Wno-declaration-after-statement $file
+ * check-known-to-fail
+ *
+ * check-error-start
+eval/unqual-postop.c:6:40: warning: incorrect type in assignment (different modifiers)
+eval/unqual-postop.c:6:40:    expected int *pp
+eval/unqual-postop.c:6:40:    got int volatile *
+eval/unqual-postop.c:7:40: warning: incorrect type in assignment (different modifiers)
+eval/unqual-postop.c:7:40:    expected int *pp
+eval/unqual-postop.c:7:40:    got int volatile *
+ * check-error-end
+ */
diff --git a/validation/eval/unqual-stmt-expr.c b/validation/eval/unqual-stmt-expr.c
new file mode 100644
index 00000000..bac6cb6b
--- /dev/null
+++ b/validation/eval/unqual-stmt-expr.c
@@ -0,0 +1,13 @@
+#define __unqual_typeof(x) typeof(({ x; }))
+
+int *foo(volatile int x);
+int *foo(volatile int x)
+{
+	extern __unqual_typeof(x) y;
+	return &y;
+}
+
+/*
+ * check-name: unqual-stmt-expr
+ * check-known-to-fail
+ */
diff --git a/validation/eval/unqual02.c b/validation/eval/unqual02.c
new file mode 100644
index 00000000..f136cbd5
--- /dev/null
+++ b/validation/eval/unqual02.c
@@ -0,0 +1,26 @@
+static void test_const(volatile int x)
+{
+	const int x = 0;
+	typeof(1?x:x)		i3; i3 = 0;	// should be OK
+	typeof(+x)		i4; i4 = 0;	// should be OK
+	typeof(-x)		i5; i5 = 0;	// should be OK
+	typeof(!x)		i6; i6 = 0;	// should be OK
+	typeof(x+x)		i7; i7 = 0;	// should be OK
+}
+
+static void test_volatile(void)
+{
+	volatile int x = 0;
+	int *pp;
+
+	typeof(1?x:x)		i3; pp = &i3;	// should be OK
+	typeof(+x)		i4; pp = &i4;	// should be OK
+	typeof(-x)		i5; pp = &i5;	// should be OK
+	typeof(!x)		i6; pp = &i6;	// should be OK
+	typeof(x+x)		i7; pp = &i7;	// should be OK
+}
+
+/*
+ * check-name: unqual02
+ * check-command: sparse -Wno-declaration-after-statement $file
+ */