d40a19da13
Fix for PR debug/41266 ChangeLog: * include/dwarf2.h (enum dwarf_tag): Add DW_TAG_template_parameter_pack and DW_TAG_formal_parameter_pack. gcc/ChangeLog: * dwarf2out.c (template_parameter_pack_die, gen_formal_parameter_pack_die ): New functions. (make_ith_pack_parameter_name): Remove this function. (dwarf_tag_name): Support printing DW_TAG_template_parameter_pack and DW_TAG_formal_parameter_pack. (gen_generic_params_dies): Represent each template parameter pack by a DW_TAG_template_parameter_pack DIE. Argument pack elements are represented by usual DW_TAG_template_*_parameter DIEs that are children of the DW_TAG_template_parameter_pack element DIE. (generic_parameter_die): This doesn't deal with parameter pack names anymore. Don't generate DW_AT_name for some DIEs, e.g. children of parameter pack DIEs. (gen_formal_parameter_die): Add a flag to not emit DW_AT_name in certain cases, e.g. for pack elements. (gen_formal_types_die, gen_decl_die): Adjust usage of gen_formal_parameter_die. (gen_subprogram_die): Represent each function parameter pack by a DW_TAG_formal_parameter_pack DIE. Arguments of of the pack are represented by usual DW_TAG_formal_parameter DIEs that are children of the DW_TAG_formal_parameter_pack DIE. Remove references to ____builtin_va_alist decls as no part of the compiler uses those anymore. * langhooks.h (struct lang_hooks_for_decls): Add function_parm_expanded_from_pack_p, get_generic_function_decl and function_parameter_pack_p hooks. Fix comment for get_innermost_generic_parms hook. * langhooks-def.h (LANG_HOOKS_FUNCTION_PARAMETER_PACK_P, LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P ): Declare new hook macros and use them to initialize lang_hook. gcc/cp/ChangeLog: * cp-lang.c (LANG_HOOKS_FUNCTION_PARAMETER_PACK_P, LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P, LANG_HOOKS_GET_GENERIC_FUNCTION_DECL): Initialize these hooks for the c++ FE. * cp-tree.h (function_parameter_pack_p, get_function_template_decl, function_parameter_expanded_from_pack_p): Declare ... * pt.c (function_parameter_pack_p, get_function_template_decl, function_parameter_expanded_from_pack_p): ... new hooks. (get_template_info): Make this more robust. (template_args_variadic_p, make_ith_pack_parameter_name): Add a new line between comment and function. (get_template_argument_pack_elems): Fix comment. (tsubst_decl): Arguments of function parameter packs are not parameter packs themselves. gcc/testsuite/ChangeLog: * g++.dg/debug/dwarf2/template-func-params-4.C: Adjust. * g++.dg/debug/dwarf2/template-func-params-7.C: Likewise. * g++.dg/debug/dwarf2/template-params-4.C: Likewise. From-SVN: r152043
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