1 files changed, 60 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/Wunused-var-21.c b/gcc/testsuite/c-c++-common/Wunused-var-21.c
new file mode 100644
index 0000000..0732d98
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/Wunused-var-21.c
@@ -0,0 +1,60 @@
+/* PR c/44677 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wunused-but-set-variable=3" } */
+
+void baz (int);
+
+void
+foo (void)
+{
+  int a = 0;		/* { dg-warning "variable 'a' set but not used" } */
+  a = 1;
+  int b = 0;		/* { dg-warning "variable 'b' set but not used" } */
+  ++b;
+  int c = 0;		/* { dg-warning "variable 'c' set but not used" } */
+  c++;
+  int d = 0;		/* { dg-warning "variable 'd' set but not used" } */
+  --d;
+  int e = 0;		/* { dg-warning "variable 'e' set but not used" } */
+  e--;
+  int f = 0;		/* { dg-warning "variable 'f' set but not used" } */
+  f += 2;
+  int g = 0;		/* { dg-warning "variable 'g' set but not used" } */
+  g |= 2;
+  int h = 0;		/* { dg-warning "variable 'h' set but not used" } */
+  h -= 2;
+  int i = 0;		/* { dg-warning "variable 'i' set but not used" } */
+  i &= 2;
+  int j = 0;		/* { dg-warning "variable 'j' set but not used" } */
+  j ^= 2;
+  int k = 0;		/* { dg-warning "variable 'k' set but not used" } */
+  k *= 2;
+  int l = 0;		/* { dg-warning "variable 'l' set but not used" } */
+  l %= 2;
+  int m = 0;		/* { dg-warning "variable 'm' set but not used" } */
+  for (int n = 4; n < 10; n++, m++)
+    baz (n);
+}
+
+int
+bar (void)
+{
+  int a = 0;
+  int b = ++a;
+  int c = 0;
+  int d = --c;
+  int e = 0;
+  int f = e--;
+  int g = 0;
+  int h = g++;
+  int i = 0;
+  int j;
+  j = i += 42;
+  int k = 0;
+  int l;
+  l = k *= 4;
+  int m = 0;
+  int n;
+  n = m |= 2;
+  return b + d + f + h + j + l + n;
+}