sdcc/support/regression/tests/bug-3766.c

   1 /** bug-3766.c: a bug in an optimization resulted in a wrong type on a struct member of
   2     another struct when passed as function parameter, resulting in a unbalanced stack
   3     assertion being triggered in code generation when the two structs had different size,
   4 */
   5
   6 #include <testfwk.h>
   7
   8 typedef struct  {
   9   unsigned  len;
  10 } Buf;
  11
  12 typedef struct  {
  13   Buf name;
  14   unsigned* dp; // Ensure that Search is bigger than Buf.
  15 } Search;
  16
  17 int compareEntryName(Buf qName);
  18
  19 void lookupFunc(Search* s) {
  20   compareEntryName(s->name); // Bug triggered on this line.
  21 }
  22
  23 void
  24 testBug (void)
  25 {
  26   Search s;
  27   s.name.len = 0x55aa;
  28 }
  29
  30 int compareEntryName (Buf qName)
  31 {
  32   ASSERT (qName.len == 0x55aa);
  33 }
  34