1 /* Some code common to C and ObjC front ends.
2 Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 #include "coretypes.h"
27 #include "insn-config.h"
28 #include "integrate.h"
30 #include "c-pretty-print.h"
34 #include "diagnostic.h"
35 #include "tree-inline.h"
38 #include "langhooks.h"
39 #include "tree-mudflap.h"
41 #include "c-objc-common.h"
43 static bool c_tree_printer (pretty_printer *, text_info *);
46 c_missing_noreturn_ok_p (tree decl)
48 /* A missing noreturn is not ok for freestanding implementations and
49 ok for the `main' function in hosted implementations. */
50 return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));
53 /* We want to inline `extern inline' functions even if this would
54 violate inlining limits. Some glibc and linux constructs depend on
55 such functions always being inlined when optimizing. */
58 c_disregard_inline_limits (tree fn)
60 if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
63 return (!flag_really_no_inline && DECL_DECLARED_INLINE_P (fn)
64 && DECL_EXTERNAL (fn));
68 c_cannot_inline_tree_fn (tree *fnp)
71 bool do_warning = (warn_inline
73 && DECL_DECLARED_INLINE_P (fn)
74 && !DECL_IN_SYSTEM_HEADER (fn));
76 if (flag_really_no_inline
77 && lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) == NULL)
80 warning (0, "%Jfunction %qF can never be inlined because it "
81 "is suppressed using -fno-inline", fn, fn);
85 /* Don't auto-inline anything that might not be bound within
86 this unit of translation. */
87 if (!DECL_DECLARED_INLINE_P (fn) && !targetm.binds_local_p (fn))
90 warning (0, "%Jfunction %qF can never be inlined because it might not "
91 "be bound within this unit of translation", fn, fn);
95 if (!function_attribute_inlinable_p (fn))
98 warning (0, "%Jfunction %qF can never be inlined because it uses "
99 "attributes conflicting with inlining", fn, fn);
106 DECL_UNINLINABLE (fn) = 1;
110 /* Called from check_global_declarations. */
113 c_warn_unused_global_decl (tree decl)
115 if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl))
117 if (DECL_IN_SYSTEM_HEADER (decl))
123 /* Initialization common to C and Objective-C front ends. */
125 c_objc_common_init (void)
127 c_init_decl_processing ();
129 if (c_common_init () == false)
132 /* These were not defined in the Objective-C front end, but I'm
133 putting them here anyway. The diagnostic format decoder might
134 want an enhanced ObjC implementation. */
135 diagnostic_format_decoder (global_dc) = &c_tree_printer;
137 /* If still unspecified, make it match -std=c99
138 (allowing for -pedantic-errors). */
139 if (mesg_implicit_function_declaration < 0)
142 mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
144 mesg_implicit_function_declaration = 0;
150 /* Called during diagnostic message formatting process to print a
151 source-level entity onto BUFFER. The meaning of the format specifiers
154 %E: an identifier or expression,
155 %F: a function declaration,
158 These format specifiers form a subset of the format specifiers set used
159 by the C++ front-end.
160 Please notice when called, the `%' part was already skipped by the
161 diagnostic machinery. */
163 c_tree_printer (pretty_printer *pp, text_info *text)
165 tree t = va_arg (*text->args_ptr, tree);
167 const char *n = "({anonymous})";
168 c_pretty_printer *cpp = (c_pretty_printer *) pp;
169 pp->padding = pp_none;
171 switch (*text->format_spec)
174 if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t))
176 t = DECL_DEBUG_EXPR (t);
179 pp_c_expression (cpp, t);
187 n = lang_hooks.decl_printable_name (t, 2);
191 gcc_assert (TYPE_P (t));
192 name = TYPE_NAME (t);
194 if (name && TREE_CODE (name) == TYPE_DECL)
196 if (DECL_NAME (name))
197 pp_string (cpp, lang_hooks.decl_printable_name (name, 2));
210 if (TREE_CODE (t) == IDENTIFIER_NODE)
211 n = IDENTIFIER_POINTER (t);
214 pp_expression (cpp, t);
227 /* In C and ObjC, all decls have "C" linkage. */
229 has_c_linkage (tree decl ATTRIBUTE_UNUSED)
235 c_initialize_diagnostics (diagnostic_context *context)
237 pretty_printer *base = context->printer;
238 c_pretty_printer *pp = XNEW (c_pretty_printer);
239 memcpy (pp_base (pp), base, sizeof (pretty_printer));
240 pp_c_pretty_printer_init (pp);
241 context->printer = (pretty_printer *) pp;
243 /* It is safe to free this object because it was previously XNEW()'d. */
248 c_types_compatible_p (tree x, tree y)
250 return comptypes (TYPE_MAIN_VARIANT (x), TYPE_MAIN_VARIANT (y));