re PR c/10175 (-Wunreachable-code doesn't work for single lines)

        PR c/10175
        * jump.c (never_reached_warning): Revert patch of 2002-11-02.
        Look backwards for a line note.

From-SVN: r65229

gcc/testsuite/gcc.dg/Wunreachable-3.c

+/* PR c/10175 */
+/* { dg-do compile } */
+/* { dg-options "-Wunreachable-code" } */
+
+int i,j;
+int main(void)
+{
+  if (0) {
+    i = 0;		   /* { dg-warning "will never be executed" "" } */
+    j = 0;
+  } else {
+    i = 1;
+    j = 1;
+  }
+
+  return 0;
+}