Test gcov output for functions that use longjmp.

From-SVN: r45468

gcc/testsuite/gcc.misc-tests/gcov-7.c

+/* Check that gcov correctly reports line counts, branch percentages,
+ * and call return percentages for functions that call longjmp. */
+
+/* { dg-options "-fprofile-arcs -ftest-coverage" } */
+/* { dg-do run { target native } } */
+
+#include <setjmp.h>
+
+jmp_buf env;
+int val;
+int longjmp_taken;
+int bar_enter, bar_exit;
+int foo_enter, foo_exit;
+
+void bar (int i)
+{
+  bar_enter++;				/* count(3) */
+					/* branch(67) */
+  if (i == 0) {
+    					/* branch(end) */
+      longjmp_taken++;			/* count(1) */
+      longjmp (env, 1);
+    }
+  val += i+1;
+  bar_exit++;				/* count(2) */
+}
+
+void foo (int i)
+{
+  foo_enter++;				/* count(3) */
+					/* branch(67) */
+  if (i == 1) {
+					/* branch(end) */
+      longjmp_taken++;			/* count(1) */
+      longjmp (env, 2);
+    }
+					/* returns(50) */
+  bar (i);				/* count(2) */
+					/* returns(100) */
+  bar (7);				/* count(1) */
+					/* returns(end) */
+  val += 16;
+  foo_exit++;				/* count(1) */
+}
+
+int
+passed ()
+{
+  return (val == 31 &&
+          longjmp_taken == 2 &&
+	  foo_enter == 3 &&
+	  foo_exit == 1 &&
+	  bar_enter == 3 &&
+	  bar_exit == 2);
+	
+}
+
+void
+leave (int i)
+{
+  if (i == 0) {
+      abort ();
+    }
+  exit (0);
+}
+
+int
+main()
+{
+  int retval;
+
+					/* branch(33) */
+  if ((retval = setjmp (env))) {
+					/* branch(end) */
+      val += retval;			/* count(2) */
+    }
+					/* returns(33) */
+  foo (val);				/* count(3) */
+					/* returns(0) */
+  leave (passed());			/* count(1) */
+					/* returns(end) */
+}
+
+/* { dg-final { run-gcov -b gcov-7.c } } */