gdb/tui: Link source and assembler scrolling .... again

[deliverable/binutils-gdb.git] / gdb / language.c

diff --git a/gdb/language.c b/gdb/language.c
index f1fc220ea8933be99cac7948415bb25668c10698..8f50af8b22dddeed56d8da3a63d59ba5bd8d2179 100644 (file)
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -1,6 +1,6 @@
 /* Multiple source language support for GDB.
 
 /* Multiple source language support for GDB.
 

-   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   Copyright (C) 1991-2020 Free Software Foundation, Inc.

 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.
 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.


@@ -43,17 +43,12 @@
 #include "symfile.h"
 #include "cp-support.h"
 #include "frame.h"
 #include "symfile.h"
 #include "cp-support.h"
 #include "frame.h"

-
-extern void _initialize_language (void);
-
-static void unk_lang_error (char *);
+#include "c-lang.h"
+#include <algorithm>
+#include "gdbarch.h"

 
 static int unk_lang_parser (struct parser_state *);
 
 
 static int unk_lang_parser (struct parser_state *);
 

-static void show_check (char *, int);
-
-static void set_check (char *, int);
-

 static void set_range_case (void);
 
 static void unk_lang_emit_char (int c, struct type *type,
 static void set_range_case (void);
 
 static void unk_lang_emit_char (int c, struct type *type,


@@ -90,24 +85,36 @@ enum language_mode language_mode = language_mode_auto;
 
 const struct language_defn *expected_language;
 
 
 const struct language_defn *expected_language;
 

-/* The list of supported languages.  The list itself is malloc'd.  */
-
-static const struct language_defn **languages;
-static unsigned languages_size;
-static unsigned languages_allocsize;
-#define        DEFAULT_ALLOCSIZE 4
+/* The list of supported languages.  Keep this in the same order as
+   the 'enum language' values.  */
+
+static const struct language_defn *languages[] = {
+  &unknown_language_defn,
+  &auto_language_defn,
+  &c_language_defn,
+  &objc_language_defn,
+  &cplus_language_defn,
+  &d_language_defn,
+  &go_language_defn,
+  &f_language_defn,
+  &m2_language_defn,
+  &asm_language_defn,
+  &pascal_language_defn,
+  &opencl_language_defn,
+  &rust_language_defn,
+  &minimal_language_defn,
+  &ada_language_defn,
+};

 
 

-/* The current values of the "set language/type/range" enum
+/* The current values of the "set language/range/case-sensitive" enum

    commands.  */
 static const char *language;
    commands.  */
 static const char *language;

-static const char *type;

 static const char *range;
 static const char *case_sensitive;
 
 static const char *range;
 static const char *case_sensitive;
 

-/* Warning issued when current_language and the language of the current
-   frame do not match.  */
-char lang_frame_mismatch_warn[] =
-"Warning: the current language does not match this frame.";
+/* See language.h.  */
+const char lang_frame_mismatch_warn[] =
+N_("Warning: the current language does not match this frame.");

 \f
 /* This page contains the functions corresponding to GDB commands
    and their helpers.  */
 \f
 /* This page contains the functions corresponding to GDB commands
    and their helpers.  */


@@ -139,40 +146,43 @@ show_language_command (struct ui_file *file, int from_tty,
       if (flang != language_unknown
          && language_mode == language_mode_manual
          && current_language->la_language != flang)
       if (flang != language_unknown
          && language_mode == language_mode_manual
          && current_language->la_language != flang)

-       printf_filtered ("%s\n", lang_frame_mismatch_warn);
+       printf_filtered ("%s\n", _(lang_frame_mismatch_warn));

     }
 }
 
 /* Set command.  Change the current working language.  */
 static void
     }
 }
 
 /* Set command.  Change the current working language.  */
 static void

-set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_language_command (const char *ignore,
+                     int from_tty, struct cmd_list_element *c)

 {
 {

-  int i;

   enum language flang = language_unknown;
 
   enum language flang = language_unknown;
 

+  /* "local" is a synonym of "auto".  */
+  if (strcmp (language, "local") == 0)
+    language = "auto";
+

   /* Search the list of languages for a match.  */
   /* Search the list of languages for a match.  */

-  for (i = 0; i < languages_size; i++)
+  for (const auto &lang : languages)

     {
     {

-      if (strcmp (languages[i]->la_name, language) == 0)
+      if (strcmp (lang->la_name, language) == 0)

        {
          /* Found it!  Go into manual mode, and use this language.  */
        {
          /* Found it!  Go into manual mode, and use this language.  */

-         if (languages[i]->la_language == language_auto)
+         if (lang->la_language == language_auto)

            {
              /* Enter auto mode.  Set to the current frame's language, if
                  known, or fallback to the initial language.  */
              language_mode = language_mode_auto;
            {
              /* Enter auto mode.  Set to the current frame's language, if
                  known, or fallback to the initial language.  */
              language_mode = language_mode_auto;

-             TRY
+             try

                {
                  struct frame_info *frame;
 
                  frame = get_selected_frame (NULL);
                  flang = get_frame_language (frame);
                }
                {
                  struct frame_info *frame;
 
                  frame = get_selected_frame (NULL);
                  flang = get_frame_language (frame);
                }

-             CATCH (ex, RETURN_MASK_ERROR)
+             catch (const gdb_exception_error &ex)

                {
                  flang = language_unknown;
                }
                {
                  flang = language_unknown;
                }

-             END_CATCH

 
              if (flang != language_unknown)
                set_language (flang);
 
              if (flang != language_unknown)
                set_language (flang);


@@ -185,7 +195,7 @@ set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
            {
              /* Enter manual mode.  Set the specified language.  */
              language_mode = language_mode_manual;
            {
              /* Enter manual mode.  Set the specified language.  */
              language_mode = language_mode_manual;

-             current_language = languages[i];
+             current_language = lang;

              set_range_case ();
              expected_language = current_language;
              return;
              set_range_case ();
              expected_language = current_language;
              return;


@@ -206,7 +216,7 @@ show_range_command (struct ui_file *file, int from_tty,
 {
   if (range_mode == range_mode_auto)
     {
 {
   if (range_mode == range_mode_auto)
     {

-      char *tmp;
+      const char *tmp;

 
       switch (range_check)
        {
 
       switch (range_check)
        {


@@ -239,7 +249,8 @@ show_range_command (struct ui_file *file, int from_tty,
 
 /* Set command.  Change the setting for range checking.  */
 static void
 
 /* Set command.  Change the setting for range checking.  */
 static void

-set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_range_command (const char *ignore,
+                  int from_tty, struct cmd_list_element *c)

 {
   if (strcmp (range, "on") == 0)
     {
 {
   if (strcmp (range, "on") == 0)
     {


@@ -280,7 +291,7 @@ show_case_command (struct ui_file *file, int from_tty,
 {
   if (case_mode == case_mode_auto)
     {
 {
   if (case_mode == case_mode_auto)
     {

-      char *tmp = NULL;
+      const char *tmp = NULL;

 
       switch (case_sensitivity)
        {
 
       switch (case_sensitivity)
        {


@@ -313,7 +324,7 @@ show_case_command (struct ui_file *file, int from_tty,
 /* Set command.  Change the setting for case sensitivity.  */
 
 static void
 /* Set command.  Change the setting for case sensitivity.  */
 
 static void

-set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
+set_case_command (const char *ignore, int from_tty, struct cmd_list_element *c)

 {
    if (strcmp (case_sensitive, "on") == 0)
      {
 {
    if (strcmp (case_sensitive, "on") == 0)
      {


@@ -363,21 +374,11 @@ set_range_case (void)
 enum language
 set_language (enum language lang)
 {
 enum language
 set_language (enum language lang)
 {

-  int i;

   enum language prev_language;
 
   prev_language = current_language->la_language;
   enum language prev_language;
 
   prev_language = current_language->la_language;

-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         current_language = languages[i];
-         set_range_case ();
-         break;
-       }
-    }
-
+  current_language = languages[lang];
+  set_range_case ();

   return prev_language;
 }
 \f
   return prev_language;
 }
 \f


@@ -471,13 +472,14 @@ range_error (const char *string,...)
 /* Return the language enum for a given language string.  */
 
 enum language
 /* Return the language enum for a given language string.  */
 
 enum language

-language_enum (char *str)
+language_enum (const char *str)

 {
 {

-  int i;
+  for (const auto &lang : languages)
+    if (strcmp (lang->la_name, str) == 0)
+      return lang->la_language;

 
 

-  for (i = 0; i < languages_size; i++)
-    if (strcmp (languages[i]->la_name, str) == 0)
-      return languages[i]->la_language;
+  if (strcmp (str, "local") == 0)
+    return language_auto;

 
   return language_unknown;
 }
 
   return language_unknown;
 }


@@ -487,36 +489,19 @@ language_enum (char *str)
 const struct language_defn *
 language_def (enum language lang)
 {
 const struct language_defn *
 language_def (enum language lang)
 {

-  int i;
-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         return languages[i];
-       }
-    }
-  return NULL;
+  return languages[lang];

 }
 
 /* Return the language as a string.  */
 }
 
 /* Return the language as a string.  */

+

 const char *
 language_str (enum language lang)
 {
 const char *
 language_str (enum language lang)
 {

-  int i;
-
-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i]->la_language == lang)
-       {
-         return languages[i]->la_name;
-       }
-    }
-  return "Unknown";
+  return languages[lang]->la_name;

 }
 
 static void
 }
 
 static void

-set_check (char *ignore, int from_tty)
+set_check (const char *ignore, int from_tty)

 {
   printf_unfiltered (
      "\"set check\" must be followed by the name of a check subcommand.\n");
 {
   printf_unfiltered (
      "\"set check\" must be followed by the name of a check subcommand.\n");


@@ -524,86 +509,78 @@ set_check (char *ignore, int from_tty)
 }
 
 static void
 }
 
 static void

-show_check (char *ignore, int from_tty)
+show_check (const char *ignore, int from_tty)

 {
   cmd_show_list (showchecklist, from_tty, "");
 }
 \f
 {
   cmd_show_list (showchecklist, from_tty, "");
 }
 \f

-/* Add a language to the set of known languages.  */

 
 

-void
-add_language (const struct language_defn *lang)
-{
-  /* For the "set language" command.  */
-  static const char **language_names = NULL;
-  /* For the "help set language" command.  */
+/* Build and install the "set language LANG" command.  */

 
 

-  if (lang->la_magic != LANG_MAGIC)
-    {
-      fprintf_unfiltered (gdb_stderr,
-                         "Magic number of %s language struct wrong\n",
-                         lang->la_name);
-      internal_error (__FILE__, __LINE__,
-                     _("failed internal consistency check"));
-    }
+static void
+add_set_language_command ()
+{
+  static const char **language_names;

 
 

-  if (!languages)
-    {
-      languages_allocsize = DEFAULT_ALLOCSIZE;
-      languages = XNEWVEC (const struct language_defn *, languages_allocsize);
-    }
-  if (languages_size >= languages_allocsize)
+  /* Build the language names array, to be used as enumeration in the
+     "set language" enum command.  +1 for "local" and +1 for NULL
+     termination.  */
+  language_names = new const char *[ARRAY_SIZE (languages) + 2];
+
+  /* Display "auto", "local" and "unknown" first, and then the rest,
+     alpha sorted.  */
+  const char **language_names_p = language_names;
+  *language_names_p++ = auto_language_defn.la_name;
+  *language_names_p++ = "local";
+  *language_names_p++ = unknown_language_defn.la_name;
+  const char **sort_begin = language_names_p;
+  for (const auto &lang : languages)

     {
     {

-      languages_allocsize *= 2;
-      languages = (const struct language_defn **) xrealloc ((char *) languages,
-                                languages_allocsize * sizeof (*languages));
+      /* Already handled above.  */
+      if (lang->la_language == language_auto
+         || lang->la_language == language_unknown)
+       continue;
+      *language_names_p++ = lang->la_name;

     }
     }

-  languages[languages_size++] = lang;
-
-  /* Build the language names array, to be used as enumeration in the
-     set language" enum command.  */
-  language_names = XRESIZEVEC (const char *, language_names,
-                              languages_size + 1);
-
-  for (int i = 0; i < languages_size; ++i)
-    language_names[i] = languages[i]->la_name;
-  language_names[languages_size] = NULL;
+  *language_names_p = NULL;
+  std::sort (sort_begin, language_names_p, compare_cstrings);

 
   /* Add the filename extensions.  */
 
   /* Add the filename extensions.  */

-  if (lang->la_filename_extensions != NULL)
-    {
-      int i;
-
-      for (i = 0; lang->la_filename_extensions[i] != NULL; ++i)
-       add_filename_language (lang->la_filename_extensions[i],
-                              lang->la_language);
-    }
+  for (const auto &lang : languages)
+    if (lang->la_filename_extensions != NULL)
+      {
+       for (size_t i = 0; lang->la_filename_extensions[i] != NULL; ++i)
+         add_filename_language (lang->la_filename_extensions[i],
+                                lang->la_language);
+      }

 
   /* Build the "help set language" docs.  */
   string_file doc;
 
   doc.printf (_("Set the current source language.\n"
                "The currently understood settings are:\n\nlocal or "
 
   /* Build the "help set language" docs.  */
   string_file doc;
 
   doc.printf (_("Set the current source language.\n"
                "The currently understood settings are:\n\nlocal or "

-               "auto    Automatic setting based on source file\n"));
+               "auto    Automatic setting based on source file"));

 
 

-  for (int i = 0; i < languages_size; ++i)
+  for (const auto &lang : languages)

     {
       /* Already dealt with these above.  */
     {
       /* Already dealt with these above.  */

-      if (languages[i]->la_language == language_unknown
-         || languages[i]->la_language == language_auto)
+      if (lang->la_language == language_unknown
+         || lang->la_language == language_auto)

        continue;
 
       /* FIXME: i18n: for now assume that the human-readable name is
         just a capitalization of the internal name.  */
        continue;
 
       /* FIXME: i18n: for now assume that the human-readable name is
         just a capitalization of the internal name.  */

-      doc.printf ("%-16s Use the %c%s language\n",
-                 languages[i]->la_name,
+      /* Note that we add the newline at the front, so we don't wind
+        up with a trailing newline.  */
+      doc.printf ("\n%-16s Use the %c%s language",
+                 lang->la_name,

                  /* Capitalize first letter of language name.  */
                  /* Capitalize first letter of language name.  */

-                 toupper (languages[i]->la_name[0]),
-                 languages[i]->la_name + 1);
+                 toupper (lang->la_name[0]),
+                 lang->la_name + 1);

     }
 
   add_setshow_enum_cmd ("language", class_support,
     }
 
   add_setshow_enum_cmd ("language", class_support,

-                       (const char **) language_names,
+                       language_names,

                        &language,
                        doc.c_str (),
                        _("Show the current source language."),
                        &language,
                        doc.c_str (),
                        _("Show the current source language."),


@@ -619,13 +596,11 @@ add_language (const struct language_defn *lang)
 CORE_ADDR 
 skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
 {
 CORE_ADDR 
 skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
 {

-  int i;
-
-  for (i = 0; i < languages_size; i++)
+  for (const auto &lang : languages)

     {
     {

-      if (languages[i]->skip_trampoline)
+      if (lang->skip_trampoline != NULL)

        {
        {

-         CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
+         CORE_ADDR real_pc = lang->skip_trampoline (frame, pc);

 
          if (real_pc)
            return real_pc;
 
          if (real_pc)
            return real_pc;


@@ -650,7 +625,7 @@ language_demangle (const struct language_defn *current_language,
   return NULL;
 }
 
   return NULL;
 }
 

-/* See langauge.h.  */
+/* See language.h.  */

 
 int
 language_sniff_from_mangled_name (const struct language_defn *lang,
 
 int
 language_sniff_from_mangled_name (const struct language_defn *lang,


@@ -677,21 +652,23 @@ language_class_name_from_physname (const struct language_defn *lang,
   return NULL;
 }
 
   return NULL;
 }
 

-/* Return non-zero if TYPE should be passed (and returned) by
-   reference at the language level.  */
-int
+/* Return information about whether TYPE should be passed
+   (and returned) by reference at the language level.  */
+
+struct language_pass_by_ref_info

 language_pass_by_reference (struct type *type)
 {
   return current_language->la_pass_by_reference (type);
 }
 
 language_pass_by_reference (struct type *type)
 {
   return current_language->la_pass_by_reference (type);
 }
 

-/* Return zero; by default, types are passed by value at the language
-   level.  The target ABI may pass or return some structs by reference
-   independent of this.  */
-int
+/* Return a default struct that provides pass-by-reference information
+   about the given TYPE.  Languages should update the default values
+   as appropriate.  */
+
+struct language_pass_by_ref_info

 default_pass_by_reference (struct type *type)
 {
 default_pass_by_reference (struct type *type)
 {

-  return 0;
+  return {};

 }
 
 /* Return the default string containing the list of characters
 }
 
 /* Return the default string containing the list of characters


@@ -715,11 +692,61 @@ default_print_array_index (struct value *index_value, struct ui_file *stream,
   fprintf_filtered (stream, "] = ");
 }
 
   fprintf_filtered (stream, "] = ");
 }
 

-void
-default_get_string (struct value *value, gdb_byte **buffer, int *length,
-                   struct type **char_type, const char **charset)
+/* See language.h.  */
+
+bool
+default_symbol_name_matcher (const char *symbol_search_name,
+                            const lookup_name_info &lookup_name,
+                            completion_match_result *comp_match_res)

 {
 {

-  error (_("Getting a string is unsupported in this language."));
+  const std::string &name = lookup_name.name ();
+  completion_match_for_lcd *match_for_lcd
+    = (comp_match_res != NULL ? &comp_match_res->match_for_lcd : NULL);
+  strncmp_iw_mode mode = (lookup_name.completion_mode ()
+                         ? strncmp_iw_mode::NORMAL
+                         : strncmp_iw_mode::MATCH_PARAMS);
+
+  if (strncmp_iw_with_mode (symbol_search_name, name.c_str (), name.size (),
+                           mode, language_minimal, match_for_lcd) == 0)
+    {
+      if (comp_match_res != NULL)
+       comp_match_res->set_match (symbol_search_name);
+      return true;
+    }
+  else
+    return false;
+}
+
+/* See language.h.  */
+
+bool
+default_is_string_type_p (struct type *type)
+{
+  type = check_typedef (type);
+  while (TYPE_CODE (type) == TYPE_CODE_REF)
+    {
+      type = TYPE_TARGET_TYPE (type);
+      type = check_typedef (type);
+    }
+  return (TYPE_CODE (type)  == TYPE_CODE_STRING);
+}
+
+/* See language.h.  */
+
+symbol_name_matcher_ftype *
+get_symbol_name_matcher (const language_defn *lang,
+                        const lookup_name_info &lookup_name)
+{
+  /* If currently in Ada mode, and the lookup name is wrapped in
+     '<...>', hijack all symbol name comparisons using the Ada
+     matcher, which handles the verbatim matching.  */
+  if (current_language->la_language == language_ada
+      && lookup_name.ada ().verbatim_p ())
+    return current_language->la_get_symbol_name_matcher (lookup_name);
+
+  if (lang->la_get_symbol_name_matcher != nullptr)
+    return lang->la_get_symbol_name_matcher (lookup_name);
+  return default_symbol_name_matcher;

 }
 
 /* Define the language that is no language.  */
 }
 
 /* Define the language that is no language.  */


@@ -730,12 +757,6 @@ unk_lang_parser (struct parser_state *ps)
   return 1;
 }
 
   return 1;
 }
 

-static void
-unk_lang_error (char *msg)
-{
-  error (_("Attempted to parse an expression with unknown language"));
-}
-

 static void
 unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
                    int quoter)
 static void
 unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
                    int quoter)


@@ -832,7 +853,6 @@ const struct language_defn unknown_language_defn =
   NULL,
   &exp_descriptor_standard,
   unk_lang_parser,
   NULL,
   &exp_descriptor_standard,
   unk_lang_parser,

-  unk_lang_error,

   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,
   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,


@@ -844,6 +864,7 @@ const struct language_defn unknown_language_defn =
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */

+  true,                                /* store_sym_names_in_linkage_form_p */

   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */
   basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */


@@ -854,17 +875,19 @@ const struct language_defn unknown_language_defn =
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,

-  default_make_symbol_completion_list,
+  default_collect_symbol_completion_matches,

   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,

-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
+  c_watch_location_expression,
+  NULL,                                /* la_get_symbol_name_matcher */

   iterate_over_symbols,
   iterate_over_symbols,

+  default_search_name_hash,

   &default_varobj_ops,
   NULL,
   NULL,
   &default_varobj_ops,
   NULL,
   NULL,

-  LANG_MAGIC
+  default_is_string_type_p,
+  "{...}"                      /* la_struct_too_deep_ellipsis */

 };
 
 /* These two structs define fake entries for the "local" and "auto"
 };
 
 /* These two structs define fake entries for the "local" and "auto"


@@ -881,7 +904,6 @@ const struct language_defn auto_language_defn =
   NULL,
   &exp_descriptor_standard,
   unk_lang_parser,
   NULL,
   &exp_descriptor_standard,
   unk_lang_parser,

-  unk_lang_error,

   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,
   null_post_parser,
   unk_lang_printchar,          /* Print character constant */
   unk_lang_printstr,


@@ -893,6 +915,7 @@ const struct language_defn auto_language_defn =
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */
   default_read_var_value,      /* la_read_var_value */
   unk_lang_trampoline,         /* Language specific skip_trampoline */
   "this",                      /* name_of_this */

+  false,                       /* store_sym_names_in_linkage_form_p */

   basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */
   basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   unk_lang_demangle,           /* Language specific symbol demangler */


@@ -903,65 +926,21 @@ const struct language_defn auto_language_defn =
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,
   1,                           /* c-style arrays */
   0,                           /* String lower bound */
   default_word_break_characters,

-  default_make_symbol_completion_list,
+  default_collect_symbol_completion_matches,

   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,
   unknown_language_arch_info,  /* la_language_arch_info.  */
   default_print_array_index,
   default_pass_by_reference,

-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
+  c_watch_location_expression,
+  NULL,                                /* la_get_symbol_name_matcher */

   iterate_over_symbols,
   iterate_over_symbols,

+  default_search_name_hash,

   &default_varobj_ops,
   NULL,
   NULL,
   &default_varobj_ops,
   NULL,
   NULL,

-  LANG_MAGIC
+  default_is_string_type_p,
+  "{...}"                      /* la_struct_too_deep_ellipsis */

 };
 
 };
 

-const struct language_defn local_language_defn =
-{
-  "local",
-  "Local",
-  language_auto,
-  range_check_off,
-  case_sensitive_on,
-  array_row_major,
-  macro_expansion_no,
-  NULL,
-  &exp_descriptor_standard,
-  unk_lang_parser,
-  unk_lang_error,
-  null_post_parser,
-  unk_lang_printchar,          /* Print character constant */
-  unk_lang_printstr,
-  unk_lang_emit_char,
-  unk_lang_print_type,         /* Print a type using appropriate syntax */
-  default_print_typedef,       /* Print a typedef using appropriate syntax */
-  unk_lang_val_print,          /* Print a value using appropriate syntax */
-  unk_lang_value_print,                /* Print a top-level value */
-  default_read_var_value,      /* la_read_var_value */
-  unk_lang_trampoline,         /* Language specific skip_trampoline */
-  "this",                      /* name_of_this */
-  basic_lookup_symbol_nonlocal,        /* lookup_symbol_nonlocal */
-  basic_lookup_transparent_type,/* lookup_transparent_type */
-  unk_lang_demangle,           /* Language specific symbol demangler */
-  NULL,
-  unk_lang_class_name,         /* Language specific
-                                  class_name_from_physname */
-  unk_op_print_tab,            /* expression operators for printing */
-  1,                           /* c-style arrays */
-  0,                           /* String lower bound */
-  default_word_break_characters,
-  default_make_symbol_completion_list,
-  unknown_language_arch_info,  /* la_language_arch_info.  */
-  default_print_array_index,
-  default_pass_by_reference,
-  default_get_string,
-  NULL,                                /* la_get_symbol_name_cmp */
-  iterate_over_symbols,
-  &default_varobj_ops,
-  NULL,
-  NULL,
-  LANG_MAGIC
-};

 \f
 /* Per-architecture language information.  */
 
 \f
 /* Per-architecture language information.  */
 


@@ -978,16 +957,15 @@ static void *
 language_gdbarch_post_init (struct gdbarch *gdbarch)
 {
   struct language_gdbarch *l;
 language_gdbarch_post_init (struct gdbarch *gdbarch)
 {
   struct language_gdbarch *l;

-  int i;

 
   l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
 
   l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);

-  for (i = 0; i < languages_size; i++)
-    {
-      if (languages[i] != NULL
-         && languages[i]->la_language_arch_info != NULL)
-       languages[i]->la_language_arch_info
-         (gdbarch, l->arch_info + languages[i]->la_language);
-    }
+  for (const auto &lang : languages)
+    if (lang != NULL && lang->la_language_arch_info != NULL)
+      {
+       lang->la_language_arch_info (gdbarch,
+                                    l->arch_info + lang->la_language);
+      }
+

   return l;
 }
 
   return l;
 }
 


@@ -1072,10 +1050,10 @@ language_alloc_type_symbol (enum language lang, struct type *type)
   gdb_assert (!TYPE_OBJFILE_OWNED (type));
 
   gdbarch = TYPE_OWNER (type).gdbarch;
   gdb_assert (!TYPE_OBJFILE_OWNED (type));
 
   gdbarch = TYPE_OWNER (type).gdbarch;

-  symbol = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct symbol);
+  symbol = new (gdbarch_obstack (gdbarch)) struct symbol ();

 
 

-  symbol->ginfo.name = TYPE_NAME (type);
-  symbol->ginfo.language = lang;
+  symbol->m_name = TYPE_NAME (type);
+  symbol->set_language (lang, nullptr);

   symbol->owner.arch = gdbarch;
   SYMBOL_OBJFILE_OWNED (symbol) = 0;
   SYMBOL_TYPE (symbol) = type;
   symbol->owner.arch = gdbarch;
   SYMBOL_OBJFILE_OWNED (symbol) = 0;
   SYMBOL_TYPE (symbol) = type;


@@ -1186,29 +1164,26 @@ _initialize_language (void)
 
   add_setshow_enum_cmd ("range", class_support, type_or_range_names,
                        &range,
 
   add_setshow_enum_cmd ("range", class_support, type_or_range_names,
                        &range,

-                       _("Set range checking.  (on/warn/off/auto)"),
-                       _("Show range checking.  (on/warn/off/auto)"),
+                       _("Set range checking (on/warn/off/auto)."),
+                       _("Show range checking (on/warn/off/auto)."),

                        NULL, set_range_command,
                        show_range_command,
                        &setchecklist, &showchecklist);
 
   add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
                        &case_sensitive, _("\
                        NULL, set_range_command,
                        show_range_command,
                        &setchecklist, &showchecklist);
 
   add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
                        &case_sensitive, _("\

-Set case sensitivity in name search.  (on/off/auto)"), _("\
-Show case sensitivity in name search.  (on/off/auto)"), _("\
+Set case sensitivity in name search (on/off/auto)."), _("\
+Show case sensitivity in name search (on/off/auto)."), _("\

 For Fortran the default is off; for other languages the default is on."),
                        set_case_command,
                        show_case_command,
                        &setlist, &showlist);
 
 For Fortran the default is off; for other languages the default is on."),
                        set_case_command,
                        show_case_command,
                        &setlist, &showlist);
 

-  add_language (&auto_language_defn);
-  add_language (&local_language_defn);
-  add_language (&unknown_language_defn);
+  add_set_language_command ();

 
 

-  language = xstrdup ("auto");
-  type = xstrdup ("auto");
-  range = xstrdup ("auto");
-  case_sensitive = xstrdup ("auto");
+  language = "auto";
+  range = "auto";
+  case_sensitive = "auto";

 
   /* Have the above take effect.  */
   set_language (language_auto);
 
   /* Have the above take effect.  */
   set_language (language_auto);