evaluate_subexp_standard: Eliminate one goto
A following patch will want to factor out a bit of evaluate_subexp_standard, and it'd be handy to reuse the code under the "nosideret:" label there too. This commits moves it to a separate function as preparation for that. gdb/ChangeLog: 2017-09-04 Pedro Alves <palves@redhat.com> * eval.c (eval_skip_value): New function. (evaluate_subexp_standard): Use it.
This commit is contained in:
Pedro Alves
parent
2c5a2be190
commit
827d0c517e
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@ -1,3 +1,8 @@
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2017-09-04 Pedro Alves <palves@redhat.com>
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* eval.c (eval_skip_value): New function.
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(evaluate_subexp_standard): Use it.
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2017-09-04 Pedro Alves <palves@redhat.com>
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* eval.c (evaluate_subexp_standard): <OP_FUNCALL>: Extract
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110
gdb/eval.c
110
gdb/eval.c
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@ -695,6 +695,14 @@ evaluate_var_msym_value (enum noside noside,
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}
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}
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/* Helper for returning a value when handling EVAL_SKIP. */
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static value *
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eval_skip_value (expression *exp)
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{
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return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
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}
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struct value *
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evaluate_subexp_standard (struct type *expect_type,
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struct expression *exp, int *pos,
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@ -727,7 +735,7 @@ evaluate_subexp_standard (struct type *expect_type,
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tem = longest_to_int (exp->elts[pc + 2].longconst);
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(*pos) += 4 + BYTES_TO_EXP_ELEM (tem + 1);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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arg1 = value_aggregate_elt (exp->elts[pc + 1].type,
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&exp->elts[pc + 3].string,
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expect_type, 0, noside);
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@ -754,7 +762,7 @@ evaluate_subexp_standard (struct type *expect_type,
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case OP_VAR_VALUE:
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(*pos) += 3;
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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/* JYG: We used to just return value_zero of the symbol type
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if we're asked to avoid side effects. Otherwise we return
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@ -795,7 +803,7 @@ evaluate_subexp_standard (struct type *expect_type,
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case OP_VAR_ENTRY_VALUE:
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(*pos) += 2;
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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{
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struct symbol *sym = exp->elts[pc + 1].symbol;
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@ -860,7 +868,7 @@ evaluate_subexp_standard (struct type *expect_type,
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tem = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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type = language_string_char_type (exp->language_defn, exp->gdbarch);
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return value_string (&exp->elts[pc + 2].string, tem, type);
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@ -869,9 +877,7 @@ evaluate_subexp_standard (struct type *expect_type,
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tem = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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if (noside == EVAL_SKIP)
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{
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goto nosideret;
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}
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return eval_skip_value (exp);
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return value_nsstring (exp->gdbarch, &exp->elts[pc + 2].string, tem + 1);
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case OP_ARRAY:
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@ -1011,7 +1017,7 @@ evaluate_subexp_standard (struct type *expect_type,
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argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
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}
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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return value_array (tem2, tem3, argvec);
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case TERNOP_SLICE:
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@ -1023,7 +1029,7 @@ evaluate_subexp_standard (struct type *expect_type,
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= value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside));
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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return value_slice (array, lowbound, upper - lowbound + 1);
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}
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@ -1050,7 +1056,7 @@ evaluate_subexp_standard (struct type *expect_type,
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(*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (sel[len] != 0)
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sel[len] = 0; /* Make sure it's terminated. */
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@ -1292,7 +1298,7 @@ evaluate_subexp_standard (struct type *expect_type,
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}
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (noside == EVAL_AVOID_SIDE_EFFECTS)
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{
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@ -1586,7 +1592,7 @@ evaluate_subexp_standard (struct type *expect_type,
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argvec[tem] = 0;
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (op == OP_ADL_FUNC)
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{
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@ -1860,7 +1866,7 @@ evaluate_subexp_standard (struct type *expect_type,
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argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside);
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argvec[tem] = 0; /* signal end of arglist */
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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goto do_call_it;
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default:
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@ -1881,7 +1887,7 @@ evaluate_subexp_standard (struct type *expect_type,
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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arg3 = value_struct_elt (&arg1, NULL, &exp->elts[pc + 2].string,
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NULL, "structure");
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if (noside == EVAL_AVOID_SIDE_EFFECTS)
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@ -1893,7 +1899,7 @@ evaluate_subexp_standard (struct type *expect_type,
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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/* Check to see if operator '->' has been overloaded. If so replace
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arg1 with the value returned by evaluating operator->(). */
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@ -1954,7 +1960,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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type = check_typedef (value_type (arg2));
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switch (TYPE_CODE (type))
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@ -2003,7 +2009,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
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arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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else
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@ -2057,7 +2063,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
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arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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else if (ptrmath_type_p (exp->language_defn, value_type (arg1))
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@ -2076,7 +2082,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
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arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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else if (ptrmath_type_p (exp->language_defn, value_type (arg1))
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@ -2109,7 +2115,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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else
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@ -2152,7 +2158,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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else
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@ -2189,13 +2195,8 @@ evaluate_subexp_standard (struct type *expect_type,
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if (noside == EVAL_SKIP)
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{
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if (nargs > 0)
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{
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continue;
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}
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else
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{
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goto nosideret;
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}
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continue;
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return eval_skip_value (exp);
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}
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/* FIXME: EVAL_AVOID_SIDE_EFFECTS handling may not be correct. */
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if (noside == EVAL_AVOID_SIDE_EFFECTS)
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@ -2294,7 +2295,7 @@ evaluate_subexp_standard (struct type *expect_type,
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if (noside == EVAL_SKIP)
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{
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evaluate_subexp (NULL_TYPE, exp, pos, noside);
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goto nosideret;
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return eval_skip_value (exp);
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}
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oldpos = *pos;
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@ -2321,7 +2322,7 @@ evaluate_subexp_standard (struct type *expect_type,
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if (noside == EVAL_SKIP)
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{
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evaluate_subexp (NULL_TYPE, exp, pos, noside);
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goto nosideret;
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return eval_skip_value (exp);
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}
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oldpos = *pos;
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@ -2347,7 +2348,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2364,7 +2365,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2381,7 +2382,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2398,7 +2399,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2415,7 +2416,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2432,7 +2433,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (binop_user_defined_p (op, arg1, arg2))
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{
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return value_x_binop (arg1, arg2, op, OP_NULL, noside);
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@ -2449,7 +2450,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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type = check_typedef (value_type (arg2));
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if (TYPE_CODE (type) != TYPE_CODE_INT
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&& TYPE_CODE (type) != TYPE_CODE_ENUM)
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@ -2469,7 +2470,7 @@ evaluate_subexp_standard (struct type *expect_type,
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case UNOP_PLUS:
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (unop_user_defined_p (op, arg1))
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return value_x_unop (arg1, op, noside);
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else
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@ -2481,7 +2482,7 @@ evaluate_subexp_standard (struct type *expect_type,
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case UNOP_NEG:
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (unop_user_defined_p (op, arg1))
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return value_x_unop (arg1, op, noside);
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else
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@ -2496,7 +2497,7 @@ evaluate_subexp_standard (struct type *expect_type,
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (unop_user_defined_p (UNOP_COMPLEMENT, arg1))
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return value_x_unop (arg1, UNOP_COMPLEMENT, noside);
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else
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@ -2508,7 +2509,7 @@ evaluate_subexp_standard (struct type *expect_type,
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case UNOP_LOGICAL_NOT:
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arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (unop_user_defined_p (op, arg1))
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return value_x_unop (arg1, op, noside);
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else
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@ -2527,7 +2528,7 @@ evaluate_subexp_standard (struct type *expect_type,
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error (_("Attempt to dereference pointer "
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"to member without an object"));
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (unop_user_defined_p (op, arg1))
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return value_x_unop (arg1, op, noside);
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else if (noside == EVAL_AVOID_SIDE_EFFECTS)
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@ -2565,7 +2566,7 @@ evaluate_subexp_standard (struct type *expect_type,
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if (noside == EVAL_SKIP)
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{
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evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
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goto nosideret;
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return eval_skip_value (exp);
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}
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else
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{
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@ -2579,7 +2580,7 @@ evaluate_subexp_standard (struct type *expect_type,
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if (noside == EVAL_SKIP)
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{
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evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
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goto nosideret;
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return eval_skip_value (exp);
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}
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return evaluate_subexp_for_sizeof (exp, pos, noside);
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@ -2588,7 +2589,7 @@ evaluate_subexp_standard (struct type *expect_type,
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type = exp->elts[pc + 1].type;
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arg1 = evaluate_subexp (type, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
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if (type != value_type (arg1))
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arg1 = value_cast (type, arg1);
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return arg1;
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@ -2598,7 +2599,7 @@ evaluate_subexp_standard (struct type *expect_type,
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type = value_type (arg1);
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arg1 = evaluate_subexp (type, exp, pos, noside);
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if (noside == EVAL_SKIP)
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goto nosideret;
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return eval_skip_value (exp);
|
||||
if (type != value_type (arg1))
|
||||
arg1 = value_cast (type, arg1);
|
||||
return arg1;
|
||||
|
|
@ -2608,7 +2609,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
type = value_type (arg1);
|
||||
arg1 = evaluate_subexp (type, exp, pos, noside);
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
return value_dynamic_cast (type, arg1);
|
||||
|
||||
case UNOP_REINTERPRET_CAST:
|
||||
|
|
@ -2616,14 +2617,14 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
type = value_type (arg1);
|
||||
arg1 = evaluate_subexp (type, exp, pos, noside);
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
return value_reinterpret_cast (type, arg1);
|
||||
|
||||
case UNOP_MEMVAL:
|
||||
(*pos) += 2;
|
||||
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
if (noside == EVAL_AVOID_SIDE_EFFECTS)
|
||||
return value_zero (exp->elts[pc + 1].type, lval_memory);
|
||||
else
|
||||
|
|
@ -2635,7 +2636,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
type = value_type (arg1);
|
||||
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
if (noside == EVAL_AVOID_SIDE_EFFECTS)
|
||||
return value_zero (type, lval_memory);
|
||||
else
|
||||
|
|
@ -2645,7 +2646,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
(*pos) += 3;
|
||||
arg1 = evaluate_subexp (expect_type, exp, pos, noside);
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
if (noside == EVAL_AVOID_SIDE_EFFECTS)
|
||||
return value_zero (exp->elts[pc + 2].type, lval_memory);
|
||||
else
|
||||
|
|
@ -2768,7 +2769,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
easier to accommodate expressions that contain types. */
|
||||
(*pos) += 2;
|
||||
if (noside == EVAL_SKIP)
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
|
||||
return allocate_value (exp->elts[pc + 1].type);
|
||||
else
|
||||
|
|
@ -2779,7 +2780,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
if (noside == EVAL_SKIP)
|
||||
{
|
||||
evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP);
|
||||
goto nosideret;
|
||||
return eval_skip_value (exp);
|
||||
}
|
||||
else if (noside == EVAL_AVOID_SIDE_EFFECTS)
|
||||
{
|
||||
|
|
@ -2844,8 +2845,7 @@ evaluate_subexp_standard (struct type *expect_type,
|
|||
"evaluate that kind of expression"));
|
||||
}
|
||||
|
||||
nosideret:
|
||||
return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
|
||||
gdb_assert_not_reached ("missed return?");
|
||||
}
|
||||
|
||||
/* Evaluate a subexpression of EXP, at index *POS,
|
||||
|
|
|
|||
Loading…
Reference in New Issue