* c-common.h (has_c_linkage): New interface.

	* c-cppbuiltin.c: Include target.h.
	(c_cpp_builtins): Define __PRAGMA_REDEFINE_EXTNAME and
	__PRAGMA_EXTERN_PREFIX when appropriate.
	* c-pragma.c: Include target.h.
	Document clarified semantics of symbol-renaming #pragmas.
	(handle_pragma_redefine_extname, handle_pragma_extern_prefix)
	(maybe_apply_renaming_pragma): Rewrite according to clarified
	semantics.  Always recognize, but do not necessarily execute.
	(init_pragma): Unconditionally register symbol-renaming pragmas.
	* system.h: Poison HANDLE_PRAGMA_REDEFINE_EXTNAME
	and HANDLE_PRAGMA_EXTERN_PREFIX.
	* target.h (struct gcc_target): Add handle_pragma_redefine_extname
	and handle_pragma_extern_prefix flags.
	* target-def.h: Add defaults for TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME
	and TARGET_HANDLE_PRAGMA_EXTERN_PREFIX.
	* Makefile.in (c-pragma.o, c-cppbuiltin.o): Update dependencies.
	* config/sol2.h: Define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME,
	not HANDLE_PRAGMA_REDEFINE_EXTNAME.
	(TARGET_OS_CPP_BUILTINS): No need to define __PRAGMA_REDEFINE_EXTNAME.
	(TRANSFER_FROM_TRAMPOLINE): Prototype mprotect.
	* config/alpha/osf.h: Define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX,
	not HANDLE_PRAGMA_EXTERN_PREFIX.
	(TARGET_OS_CPP_BUILTINS): No need to define __PRAGMA_EXTERN_PREFIX.
	* doc/extend.texi (Solaris Pragmas, Tru64 Pragmas): Combine
	into one section "Symbol-Renaming Pragmas"; clarify; document
	adjusted semantics.

	* builtins.c (expand_builtin): Do not issue error for a builtin
	with no special case code and no DECL_ASSEMBLER_NAME; just do the
	library call.
	* c-decl.c (builtin_function): Don't call make_decl_rtl.
	* c-objc-common.c (has_c_linkage): Stub implementation.
	* cgraphunit.c (cgraph_expand_function)
	(cgraph_remove_unreachable_nodes): Don't clear DECL_ARGUMENTS.

cp:
	* cp-lang.c (has_c_linkage): Implement.

	* cp-tree.h (set_mangled_name_for_decl): Don't prototype.
	* decl.c (duplicate_decls): Use COPY_DECL_RTL.
	(builtin_function_1): Don't call make_decl_rtl.
	(build_cp_library_fn): Don't call set_mangled_name_for_decl.
	(grokvardecl): Don't call mangle_decl.
	* except.c (nothrow_libfn_p): Look at DECL_NAME, not
	DECL_ASSEMBLER_NAME.
	* method.c (set_mangled_name_for_decl): Delete.
	* name-lookup.c (pushdecl): When a local extern shadows a
	file-scope declaration of the same object, give both DECLs the
	same DECL_UID.
	* typeck.c (cxx_mark_addressable): Don't set TREE_ADDRESSABLE
	on DECL_ASSEMBLER_NAME.

testsuite:
	* g++.dg/expr/enum1.C, g++.dg/opt/const3.C: Declare abort with
	extern "C".
	* g++.dg/other/pragma-re-1.C: Add comments.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@83405 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 4 deletions

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 75b36868bb8..6c21b666a55 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1381,8 +1381,9 @@ c-aux-info.o : c-aux-info.c  $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_
     $(C_TREE_H) $(FLAGS_H) toplev.h
 c-convert.o : c-convert.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
     $(FLAGS_H) toplev.h $(C_COMMON_H) real.h
-c-pragma.o: c-pragma.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) $(TREE_H) \
-    function.h c-pragma.h toplev.h output.h $(GGC_H) $(TM_P_H) $(C_COMMON_H) gt-c-pragma.h
+c-pragma.o: c-pragma.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \
+    $(TREE_H) function.h c-pragma.h toplev.h output.h $(GGC_H) $(TM_P_H) \
+    $(C_COMMON_H) $(TARGET_H) gt-c-pragma.h
 graph.o: graph.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) toplev.h $(FLAGS_H) output.h \
     $(RTL_H) function.h hard-reg-set.h $(BASIC_BLOCK_H) graph.h
 sbitmap.o: sbitmap.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) $(FLAGS_H) \
@@ -1424,8 +1425,8 @@ c-opts.o : c-opts.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H)		\
 		$< $(OUTPUT_OPTION) @TARGET_SYSTEM_ROOT_DEFINE@
 
 c-cppbuiltin.o : c-cppbuiltin.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
-	$(TREE_H) version.h $(C_COMMON_H) c-pragma.h $(FLAGS_H) toplev.h langhooks.h \
-	output.h except.h real.h $(TM_P_H)
+	$(TREE_H) version.h $(C_COMMON_H) c-pragma.h $(FLAGS_H) toplev.h \
+	langhooks.h output.h except.h real.h $(TARGET_H) $(TM_P_H)
 
 # A file used by all variants of C and some other languages.