widl: Issue an error instead of crashing for dividing by zero in a constant expression.

efd10742 · Rob Shearman · Alexandre Julliard · c46fcfb3 · efd10742
Commit efd10742 authored Apr 20, 2008 by Rob Shearman Committed by Alexandre Julliard Apr 21, 2008
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parser.y tools/widl/parser.y +5 -1

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--- a/tools/widl/parser.y
+++ b/tools/widl/parser.y
@@ -1237,7 +1237,11 @@ static expr_t *make_expr2(enum expr_type type, expr_t *expr1, expr_t *expr2)
      e->cval = expr1->cval * expr2->cval;
      break;
    case EXPR_DIV:
-      e->cval = expr1->cval / expr2->cval;
+      if (expr2->cval == 0) {
+        error_loc("divide by zero in expression\n");
+        e->cval = 0;
+      } else
+        e->cval = expr1->cval / expr2->cval;
      break;
    case EXPR_OR:
      e->cval = expr1->cval | expr2->cval;