/* Utility routines for data type conversion for GNU C.
- Copyright (C) 1987, 1988, 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1991, 1992, 1994 Free Software Foundation, Inc.
This file is part of GNU C.
/* If we are widening the type, put in an explicit conversion.
Similarly if we are not changing the width. However, if this is
a logical operation that just returns 0 or 1, we can change the
- type of the expression (see below). */
+ type of the expression. For logical operations, we must
+ also change the types of the operands to maintain type
+ correctness. */
- if (TREE_CODE_CLASS (ex_form) == '<'
- || ex_form == TRUTH_AND_EXPR || ex_form == TRUTH_ANDIF_EXPR
- || ex_form == TRUTH_OR_EXPR || ex_form == TRUTH_ORIF_EXPR
- || ex_form == TRUTH_XOR_EXPR || ex_form == TRUTH_NOT_EXPR)
+ if (TREE_CODE_CLASS (ex_form) == '<')
{
TREE_TYPE (expr) = type;
return expr;
}
+ else if (ex_form == TRUTH_AND_EXPR || ex_form == TRUTH_ANDIF_EXPR
+ || ex_form == TRUTH_OR_EXPR || ex_form == TRUTH_ORIF_EXPR
+ || ex_form == TRUTH_XOR_EXPR)
+ {
+ TREE_OPERAND (expr, 0) = convert (type, TREE_OPERAND (expr, 0));
+ TREE_OPERAND (expr, 1) = convert (type, TREE_OPERAND (expr, 1));
+ TREE_TYPE (expr) = type;
+ return expr;
+ }
+ else if (ex_form == TRUTH_NOT_EXPR)
+ {
+ TREE_OPERAND (expr, 0) = convert (type, TREE_OPERAND (expr, 0));
+ TREE_TYPE (expr) = type;
+ return expr;
+ }
else if (outprec >= inprec)
return build1 (NOP_EXPR, type, expr);