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re PR c/11658 (Wrong error message)
2004-02-03 Paolo Bonzini <bonzini@gnu.org> PR c/11658 PR c/13994 * Makefile.in (c-parse.o, c-convert.o, c-typeck.o): Depend on langhooks.h. * objc/Make-lang.in (objc-parse.o): Depend on langhooks.h. * c-parse.in, c-convert.c, c-typeck.c, objc/objc-act.c: Include langhooks.h. Replace c_common_truthvalue_conversion with the truthvalue_conversion language hook throughout. (expr_no_commas): Call default_conversion before save_expr for the first term of the production 'x ? : y'. * c-common.c (c_common_truthvalue_conversion): Remove obsolete block. Invoke recursively the hook instead of this function. * c-convert.c (convert): handle ERROR_MARK_NODE. * c-typeck.c (build_binary_op): handle ERROR_MARK_NODE returned by the truthvalue_conversion language hook. * c-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Use c_objc_common_truthvalue_conversion. * c-objc-common.c (c_objc_common_truthvalue_conversion): New function. * c-tree.h (c_objc_common_truthvalue_conversion): Declare it. * objc/objc-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Use c_objc_common_truthvalue_conversion. From-SVN: r77168
This commit is contained in:
Paolo Bonzini
Paolo Carlini
parent
0251aa4518
commit
e57e265ba6
@ -1,3 +1,29 @@
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2004-02-03 Paolo Bonzini <bonzini@gnu.org>
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PR c/11658
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PR c/13994
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* Makefile.in (c-parse.o, c-convert.o, c-typeck.o): Depend
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on langhooks.h.
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* objc/Make-lang.in (objc-parse.o): Depend on langhooks.h.
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* c-parse.in, c-convert.c, c-typeck.c, objc/objc-act.c:
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Include langhooks.h. Replace c_common_truthvalue_conversion
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with the truthvalue_conversion language hook throughout.
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(expr_no_commas): Call default_conversion before save_expr
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for the first term of the production 'x ? : y'.
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* c-common.c (c_common_truthvalue_conversion): Remove
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obsolete block. Invoke recursively the hook instead
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of this function.
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* c-convert.c (convert): handle ERROR_MARK_NODE.
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* c-typeck.c (build_binary_op): handle ERROR_MARK_NODE
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returned by the truthvalue_conversion language hook.
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* c-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Use
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c_objc_common_truthvalue_conversion.
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* c-objc-common.c (c_objc_common_truthvalue_conversion):
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New function.
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* c-tree.h (c_objc_common_truthvalue_conversion): Declare it.
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* objc/objc-lang.c (LANG_HOOKS_TRUTHVALUE_CONVERSION): Use
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c_objc_common_truthvalue_conversion.
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2004-02-03 Kazu Hirata <kazu@cs.umass.edu>
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* config/c4x/c4x.h (FUNCTION_VALUE): Use gen_rtx_REG instead
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@ -1272,7 +1272,7 @@ c-errors.o: c-errors.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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$(C_TREE_H) flags.h $(DIAGNOSTIC_H) $(TM_P_H)
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c-parse.o : c-parse.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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$(GGC_H) intl.h $(C_TREE_H) input.h flags.h toplev.h output.h $(CPPLIB_H) \
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varray.h gt-c-parse.h
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varray.h gt-c-parse.h langhooks.h
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srcextra: c-parse.y c-parse.c gengtype-lex.c gengtype-yacc.c gengtype-yacc.h
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-cp -p $^ $(srcdir)
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@ -1295,7 +1295,8 @@ c-decl.o : c-decl.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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opts.h c-pragma.h gt-c-decl.h cgraph.h $(HASHTAB_H) libfuncs.h except.h \
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$(LANGHOOKS_DEF_H)
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c-typeck.o : c-typeck.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(C_TREE_H) \
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$(TARGET_H) flags.h intl.h output.h $(EXPR_H) $(RTL_H) toplev.h $(TM_P_H)
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$(TARGET_H) flags.h intl.h output.h $(EXPR_H) $(RTL_H) toplev.h $(TM_P_H) \
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langhooks.h
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c-lang.o : c-lang.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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$(C_TREE_H) $(C_PRETTY_PRINT_H) $(DIAGNOSTIC_H) \
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$(GGC_H) langhooks.h $(LANGHOOKS_DEF_H) $(C_COMMON_H) gtype-c.h
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@ -1345,7 +1346,7 @@ c-common.o : c-common.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
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$(OBSTACK_H) $(C_COMMON_H) flags.h toplev.h output.h c-pragma.h intl.h \
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$(GGC_H) $(EXPR_H) $(TM_P_H) builtin-types.def builtin-attrs.def \
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$(DIAGNOSTIC_H) gt-c-common.h langhooks.h varray.h $(RTL_H) \
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$(TARGET_H) $(C_TREE_H)
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$(TARGET_H) $(C_TREE_H) langhooks.h
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c-pretty-print.o : c-pretty-print.c $(C_PRETTY_PRINT_H) \
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$(C_COMMON_H) $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) real.h
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@ -2614,28 +2614,6 @@ c_common_truthvalue_conversion (tree expr)
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if (TREE_CODE (expr) == FUNCTION_DECL)
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expr = build_unary_op (ADDR_EXPR, expr, 0);
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#if 0 /* This appears to be wrong for C++. */
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/* These really should return error_mark_node after 2.4 is stable.
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But not all callers handle ERROR_MARK properly. */
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switch (TREE_CODE (TREE_TYPE (expr)))
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{
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case RECORD_TYPE:
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error ("struct type value used where scalar is required");
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return truthvalue_false_node;
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case UNION_TYPE:
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error ("union type value used where scalar is required");
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return truthvalue_false_node;
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case ARRAY_TYPE:
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error ("array type value used where scalar is required");
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return truthvalue_false_node;
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default:
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break;
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}
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#endif /* 0 */
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switch (TREE_CODE (expr))
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{
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case EQ_EXPR:
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@ -2686,15 +2664,15 @@ c_common_truthvalue_conversion (tree expr)
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case COMPLEX_EXPR:
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return build_binary_op ((TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 1))
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? TRUTH_OR_EXPR : TRUTH_ORIF_EXPR),
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c_common_truthvalue_conversion (TREE_OPERAND (expr, 0)),
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c_common_truthvalue_conversion (TREE_OPERAND (expr, 1)),
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(*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 0)),
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(*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 1)),
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0);
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case NEGATE_EXPR:
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case ABS_EXPR:
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case FLOAT_EXPR:
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/* These don't change whether an object is nonzero or zero. */
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return c_common_truthvalue_conversion (TREE_OPERAND (expr, 0));
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return (*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 0));
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case LROTATE_EXPR:
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case RROTATE_EXPR:
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@ -2702,15 +2680,15 @@ c_common_truthvalue_conversion (tree expr)
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we can't ignore them if their second arg has side-effects. */
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if (TREE_SIDE_EFFECTS (TREE_OPERAND (expr, 1)))
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return build (COMPOUND_EXPR, truthvalue_type_node, TREE_OPERAND (expr, 1),
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c_common_truthvalue_conversion (TREE_OPERAND (expr, 0)));
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(*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 0)));
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else
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return c_common_truthvalue_conversion (TREE_OPERAND (expr, 0));
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return (*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 0));
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case COND_EXPR:
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/* Distribute the conversion into the arms of a COND_EXPR. */
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return fold (build (COND_EXPR, truthvalue_type_node, TREE_OPERAND (expr, 0),
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c_common_truthvalue_conversion (TREE_OPERAND (expr, 1)),
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c_common_truthvalue_conversion (TREE_OPERAND (expr, 2))));
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(*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 1)),
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(*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 2))));
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case CONVERT_EXPR:
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/* Don't cancel the effect of a CONVERT_EXPR from a REFERENCE_TYPE,
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@ -2723,7 +2701,7 @@ c_common_truthvalue_conversion (tree expr)
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/* If this is widening the argument, we can ignore it. */
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if (TYPE_PRECISION (TREE_TYPE (expr))
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>= TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (expr, 0))))
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return c_common_truthvalue_conversion (TREE_OPERAND (expr, 0));
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return (*lang_hooks.truthvalue_conversion) (TREE_OPERAND (expr, 0));
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break;
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case MINUS_EXPR:
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@ -2772,8 +2750,8 @@ c_common_truthvalue_conversion (tree expr)
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return (build_binary_op
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((TREE_SIDE_EFFECTS (expr)
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? TRUTH_OR_EXPR : TRUTH_ORIF_EXPR),
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c_common_truthvalue_conversion (build_unary_op (REALPART_EXPR, t, 0)),
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c_common_truthvalue_conversion (build_unary_op (IMAGPART_EXPR, t, 0)),
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(*lang_hooks.truthvalue_conversion) (build_unary_op (REALPART_EXPR, t, 0)),
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(*lang_hooks.truthvalue_conversion) (build_unary_op (IMAGPART_EXPR, t, 0)),
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0));
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}
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@ -33,6 +33,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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#include "flags.h"
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#include "convert.h"
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#include "c-common.h"
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#include "langhooks.h"
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#include "toplev.h"
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/* Change of width--truncation and extension of integers or reals--
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@ -94,7 +95,10 @@ convert (tree type, tree expr)
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return fold (convert_to_integer (type, e));
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if (code == BOOLEAN_TYPE)
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{
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tree t = c_common_truthvalue_conversion (expr);
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tree t = (*lang_hooks.truthvalue_conversion) (expr);
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if (TREE_CODE (t) == ERROR_MARK)
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return t;
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/* If it returns a NOP_EXPR, we must fold it here to avoid
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infinite recursion between fold () and convert (). */
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if (TREE_CODE (t) == NOP_EXPR)
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@ -66,7 +66,7 @@ enum c_language_kind c_language = clk_c;
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#undef LANG_HOOKS_PARSE_FILE
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#define LANG_HOOKS_PARSE_FILE c_common_parse_file
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#undef LANG_HOOKS_TRUTHVALUE_CONVERSION
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#define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
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#define LANG_HOOKS_TRUTHVALUE_CONVERSION c_objc_common_truthvalue_conversion
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#undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
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#define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
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#undef LANG_HOOKS_UNSAFE_FOR_REEVAL
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@ -332,3 +332,32 @@ c_tree_printer (pretty_printer *pp, text_info *text)
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pp_string (pp, n);
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return true;
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}
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tree
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c_objc_common_truthvalue_conversion (tree expr)
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{
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retry:
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switch (TREE_CODE (TREE_TYPE (expr)))
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{
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case ARRAY_TYPE:
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expr = default_conversion (expr);
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if (TREE_CODE (TREE_TYPE (expr)) != ARRAY_TYPE)
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goto retry;
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error ("used array that cannot be converted to pointer where scalar is required");
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return error_mark_node;
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case RECORD_TYPE:
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error ("used struct type value where scalar is required");
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return error_mark_node;
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case UNION_TYPE:
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error ("used union type value where scalar is required");
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return error_mark_node;
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default:
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break;
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}
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return c_common_truthvalue_conversion (expr);
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}
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@ -38,6 +38,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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#include "coretypes.h"
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#include "tm.h"
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#include "tree.h"
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#include "langhooks.h"
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#include "input.h"
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#include "cpplib.h"
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#include "intl.h"
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@ -579,21 +580,21 @@ expr_no_commas:
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| expr_no_commas '^' expr_no_commas
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{ $$ = parser_build_binary_op ($2, $1, $3); }
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| expr_no_commas ANDAND
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{ $1 = c_common_truthvalue_conversion
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{ $1 = (*lang_hooks.truthvalue_conversion)
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(default_conversion ($1));
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skip_evaluation += $1 == truthvalue_false_node; }
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expr_no_commas
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{ skip_evaluation -= $1 == truthvalue_false_node;
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$$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
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| expr_no_commas OROR
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{ $1 = c_common_truthvalue_conversion
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{ $1 = (*lang_hooks.truthvalue_conversion)
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(default_conversion ($1));
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skip_evaluation += $1 == truthvalue_true_node; }
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expr_no_commas
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{ skip_evaluation -= $1 == truthvalue_true_node;
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$$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
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| expr_no_commas '?'
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{ $1 = c_common_truthvalue_conversion
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{ $1 = (*lang_hooks.truthvalue_conversion)
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(default_conversion ($1));
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skip_evaluation += $1 == truthvalue_false_node; }
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expr ':'
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@ -606,9 +607,8 @@ expr_no_commas:
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{ if (pedantic)
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pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
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/* Make sure first operand is calculated only once. */
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$<ttype>2 = save_expr ($1);
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$1 = c_common_truthvalue_conversion
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(default_conversion ($<ttype>2));
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$<ttype>2 = save_expr (default_conversion ($1));
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$1 = (*lang_hooks.truthvalue_conversion) ($<ttype>2);
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skip_evaluation += $1 == truthvalue_true_node; }
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':' expr_no_commas
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{ skip_evaluation -= $1 == truthvalue_true_node;
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@ -2192,7 +2192,7 @@ if_prefix:
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IF
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{ $<ttype>$ = c_begin_if_stmt (); }
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'(' expr ')'
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{ c_expand_start_cond (c_common_truthvalue_conversion ($4),
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{ c_expand_start_cond ((*lang_hooks.truthvalue_conversion) ($4),
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compstmt_count,$<ttype>2);
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$<itype>$ = stmt_count;
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if_stmt_locus = $<location>-1; }
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@ -2301,16 +2301,16 @@ select_or_iter_stmt:
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$<ttype>$ = c_begin_while_stmt (); }
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'(' expr ')'
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{ c_in_iteration_stmt++;
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$4 = c_common_truthvalue_conversion ($4);
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$4 = (*lang_hooks.truthvalue_conversion) ($4);
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c_finish_while_stmt_cond
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(c_common_truthvalue_conversion ($4), $<ttype>2);
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((*lang_hooks.truthvalue_conversion) ($4), $<ttype>2);
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$<ttype>$ = add_stmt ($<ttype>2); }
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c99_block_lineno_labeled_stmt
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{ c_in_iteration_stmt--;
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RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
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| do_stmt_start
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'(' expr ')' ';'
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{ DO_COND ($1) = c_common_truthvalue_conversion ($3); }
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{ DO_COND ($1) = (*lang_hooks.truthvalue_conversion) ($3); }
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| do_stmt_start error
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{ }
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| FOR
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@ -2323,7 +2323,7 @@ select_or_iter_stmt:
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xexpr ';'
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{ if ($6)
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FOR_COND ($<ttype>2)
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= c_common_truthvalue_conversion ($6); }
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= (*lang_hooks.truthvalue_conversion) ($6); }
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xexpr ')'
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{ c_in_iteration_stmt++;
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FOR_EXPR ($<ttype>2) = $9; }
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@ -237,6 +237,7 @@ extern void merge_translation_unit_decls (void);
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extern int c_disregard_inline_limits (tree);
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extern int c_cannot_inline_tree_fn (tree *);
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extern bool c_objc_common_init (void);
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extern tree c_objc_common_truthvalue_conversion (tree expr);
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extern int c_missing_noreturn_ok_p (tree);
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extern void c_objc_common_finish_file (void);
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extern int defer_fn (tree);
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@ -35,6 +35,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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#include "tm.h"
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#include "rtl.h"
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#include "tree.h"
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#include "langhooks.h"
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#include "c-tree.h"
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#include "tm_p.h"
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#include "flags.h"
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@ -2259,7 +2260,7 @@ build_unary_op (enum tree_code code, tree xarg, int flag)
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error ("wrong type argument to unary exclamation mark");
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return error_mark_node;
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}
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arg = c_common_truthvalue_conversion (arg);
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arg = (*lang_hooks.truthvalue_conversion) (arg);
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return invert_truthvalue (arg);
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case NOP_EXPR:
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@ -2632,7 +2633,7 @@ build_conditional_expr (tree ifexp, tree op1, tree op2)
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tree result_type = NULL;
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tree orig_op1 = op1, orig_op2 = op2;
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ifexp = c_common_truthvalue_conversion (default_conversion (ifexp));
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ifexp = (*lang_hooks.truthvalue_conversion) (default_conversion (ifexp));
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/* Promote both alternatives. */
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@ -6539,8 +6540,8 @@ build_binary_op (enum tree_code code, tree orig_op0, tree orig_op1,
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but that does not mean the operands should be
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converted to ints! */
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result_type = integer_type_node;
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op0 = c_common_truthvalue_conversion (op0);
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op1 = c_common_truthvalue_conversion (op1);
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op0 = (*lang_hooks.truthvalue_conversion) (op0);
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op1 = (*lang_hooks.truthvalue_conversion) (op1);
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converted = 1;
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}
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break;
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@ -6778,6 +6779,9 @@ build_binary_op (enum tree_code code, tree orig_op0, tree orig_op1,
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break;
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}
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if (code0 == ERROR_MARK || code1 == ERROR_MARK)
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return error_mark_node;
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if ((code0 == INTEGER_TYPE || code0 == REAL_TYPE || code0 == COMPLEX_TYPE
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|| code0 == VECTOR_TYPE)
|
||||
&&
|
||||
|
||||
@ -64,7 +64,8 @@ objc/objc-lang.o : objc/objc-lang.c \
|
||||
|
||||
objc/objc-parse.o : objc/objc-parse.c \
|
||||
$(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(C_TREE_H) \
|
||||
toplev.h $(GGC_H) c-pragma.h input.h flags.h output.h objc/objc-act.h
|
||||
toplev.h $(GGC_H) c-pragma.h input.h flags.h output.h objc/objc-act.h \
|
||||
langhooks.h
|
||||
|
||||
objc/objc-act.o : objc/objc-act.c \
|
||||
$(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(RTL_H) $(TM_P_H) \
|
||||
|
||||
@ -50,6 +50,7 @@ Boston, MA 02111-1307, USA. */
|
||||
#include "c-tree.h"
|
||||
#include "c-common.h"
|
||||
#include "flags.h"
|
||||
#include "langhooks.h"
|
||||
#include "objc-act.h"
|
||||
#include "input.h"
|
||||
#include "except.h"
|
||||
@ -2850,7 +2851,7 @@ objc_build_try_enter_fragment (void)
|
||||
cond = build_unary_op (TRUTH_NOT_EXPR,
|
||||
build_function_call (objc_setjmp_decl, func_params),
|
||||
0);
|
||||
c_expand_start_cond (c_common_truthvalue_conversion (cond),
|
||||
c_expand_start_cond ((*lang_hooks.truthvalue_conversion) (cond),
|
||||
0, if_stmt);
|
||||
objc_enter_block ();
|
||||
}
|
||||
@ -2978,7 +2979,7 @@ objc_build_try_epilogue (int also_catch_prologue)
|
||||
val_stack_push (&catch_count_stack, 1);
|
||||
if_stmt = c_begin_if_stmt ();
|
||||
if_nesting_count++;
|
||||
c_expand_start_cond (c_common_truthvalue_conversion (boolean_false_node),
|
||||
c_expand_start_cond ((*lang_hooks.truthvalue_conversion) (boolean_false_node),
|
||||
0, if_stmt);
|
||||
objc_enter_block ();
|
||||
|
||||
@ -3068,7 +3069,7 @@ objc_build_catch_stmt (tree catch_expr)
|
||||
cond = build_function_call (objc_exception_match_decl, func_params);
|
||||
}
|
||||
|
||||
c_expand_start_cond (c_common_truthvalue_conversion (cond),
|
||||
c_expand_start_cond ((*lang_hooks.truthvalue_conversion) (cond),
|
||||
0, if_stmt);
|
||||
objc_enter_block ();
|
||||
objc_declare_variable (RID_REGISTER, var_name,
|
||||
@ -3138,7 +3139,7 @@ objc_build_finally_prologue (void)
|
||||
tree if_stmt = c_begin_if_stmt ();
|
||||
if_nesting_count++;
|
||||
|
||||
c_expand_start_cond (c_common_truthvalue_conversion
|
||||
c_expand_start_cond ((*lang_hooks.truthvalue_conversion)
|
||||
(build_unary_op
|
||||
(TRUTH_NOT_EXPR,
|
||||
TREE_VALUE (objc_rethrow_exception), 0)),
|
||||
@ -3166,7 +3167,7 @@ objc_build_finally_epilogue (void)
|
||||
if_nesting_count++;
|
||||
|
||||
c_expand_start_cond
|
||||
(c_common_truthvalue_conversion (TREE_VALUE (objc_rethrow_exception)),
|
||||
((*lang_hooks.truthvalue_conversion) (TREE_VALUE (objc_rethrow_exception)),
|
||||
0, if_stmt);
|
||||
objc_enter_block ();
|
||||
objc_build_throw_stmt (TREE_VALUE (objc_rethrow_exception));
|
||||
|
||||
@ -60,7 +60,7 @@ enum c_language_kind c_language = clk_objc;
|
||||
#undef LANG_HOOKS_MARK_ADDRESSABLE
|
||||
#define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
|
||||
#undef LANG_HOOKS_TRUTHVALUE_CONVERSION
|
||||
#define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
|
||||
#define LANG_HOOKS_TRUTHVALUE_CONVERSION c_objc_common_truthvalue_conversion
|
||||
#undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
|
||||
#define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
|
||||
#undef LANG_HOOKS_UNSAFE_FOR_REEVAL
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user