sdcc/support/regression/tests/bug-2195.c

   1 /*
   2    bug1-2195.c
   3
   4    comparison in foo() destroyed value of child due to incorrect register survival tracking
   5 */
   6
   7 #include <testfwk.h>
   8
   9 int g(void)
  10 {
  11         static int i = -2;
  12         return(i++);
  13 }
  14
  15 void bar(int i)
  16 {
  17         ASSERT(i == -1);
  18 }
  19
  20 extern void baa(int i)
  21 {
  22         ASSERT(i != -1);
  23 }
  24
  25 void
  26 foo(void)
  27 {
  28     int child;
  29
  30     child = g();
  31
  32     if (child == -1) {
  33         bar(child);
  34     } else {
  35         baa(child);
  36     }
  37 }
  38
  39 void testBug(void)
  40 {
  41         foo();
  42         foo();
  43         foo();
  44         foo();
  45         foo();
  46 }
  47