gcc/testsuite/gcc.c-torture/compile/BUG1.c

   1 struct _XtTextSource {
   2         /* ... */
   3         void (* SetSelection)();
   4         /* ... */
   5     };
   6
   7 typedef struct _XtTextSource *XtTextSource;
   8
   9 typedef struct _TextPart {
  10         XtTextSource source;
  11         /* ... */
  12 } TextPart;
  13
  14 typedef struct _TextRec {
  15         /* ... */
  16         TextPart    text;
  17 } TextRec;
  18
  19 typedef struct _TextRec      *TextWidget;
  20
  21
  22 void XtTextUnsetSelection(w)
  23     TextWidget          w;                 /* original is: Widget w; */
  24 {
  25     register TextWidget ctx = (TextWidget) w;
  26     void (*nullProc)() = 0;
  27
  28 /*
  29  * the following line causes the error, when optimizing:
  30  */
  31
  32     if (ctx->text.source->SetSelection != nullProc) {
  33
  34         foo();
  35
  36     }
  37 }