1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/warn/sequence-pt-2.C b/gcc/testsuite/g++.dg/warn/sequence-pt-2.C
new file mode 100644
index 000000000..9a4b618ea
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/sequence-pt-2.C
@@ -0,0 +1,46 @@
+/* More sequence point warning tests  */
+/* { dg-do compile } */
+/* { dg-options "-Wsequence-point" } */
+
+struct s { struct s *nxt; int v; } q;
+    
+int x[10];
+    
+int foo(int *p)
+{
+  int i = 0;
+
+  /* Test general-lvalue sequence point warnings  */
+  (*p) = (*p)++; /* { dg-warning "undefined" "sequence point warning" } */
+  p[3] = p[3]++; /* { dg-warning "undefined" "sequence point warning" } */
+  p[i] = p[i]++; /* { dg-warning "undefined" "sequence point warning" } */
+  x[3] = x[3]++; /* { dg-warning "undefined" "sequence point warning" } */
+  q.nxt->nxt->v = q.nxt->nxt->v++; /* { dg-warning "undefined" "sequence point warning" } */
+
+  /* test expressions that appear elsewhere in the C grammar */
+
+  { int a = i-i++; (void)a;} /* { dg-warning "undefined" "sequence point warning" } */
+
+  if ((i-i++) != 0) /* { dg-warning "undefined" "sequence point warning" } */
+    return i-i++; /* { dg-warning "undefined" "sequence point warning" } */
+
+  for (i-i++;;)  /* { dg-warning "undefined" "sequence point warning" } */
+    ;
+
+  for (; (i-i++) != 0; )  /* { dg-warning "undefined" "sequence point warning" } */
+    ;
+
+  for (;;i-i++)  /* { dg-warning "undefined" "sequence point warning" } */
+    ;
+
+  while ((i-i++) != 0)  /* { dg-warning "undefined" "sequence point warning" } */
+    ;
+
+  do {} while ((i-i++) != 0);  /* { dg-warning "undefined" "sequence point warning" } */
+
+  switch (i-i++) {  /* { dg-warning "undefined" "sequence point warning" } */
+  case 0: return 1;
+  }
+
+  return 0;
+}