Fix "set integer-command unlimited junk"

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

diff --git a/gdb/language.c b/gdb/language.c
index 7f870d83522d945abd91b248f42d123c73d547b5..a7c09ccd6dbcfd7623beb60766f34ba815575eda 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) 1991-2019 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.


@@ -46,14 +46,8 @@
 #include "c-lang.h"
 #include <algorithm>
 
 #include "c-lang.h"
 #include <algorithm>
 

-static void unk_lang_error (const char *);
-

 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,


@@ -111,10 +105,9 @@ static const struct language_defn *languages[] = {
   &ada_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;
 


@@ -159,7 +152,8 @@ show_language_command (struct ui_file *file, int from_tty,
 
 /* 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)

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


@@ -178,18 +172,17 @@ set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
              /* 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);


@@ -256,7 +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)
     {


@@ -330,7 +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)
      {


@@ -478,7 +472,7 @@ 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)

 {
   for (const auto &lang : languages)
     if (strcmp (lang->la_name, str) == 0)
 {
   for (const auto &lang : languages)
     if (strcmp (lang->la_name, str) == 0)


@@ -507,7 +501,7 @@ language_str (enum language lang)
 }
 
 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");


@@ -515,7 +509,7 @@ 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, "");
 }
 {
   cmd_show_list (showchecklist, from_tty, "");
 }


@@ -565,7 +559,7 @@ add_set_language_command ()
 
   doc.printf (_("Set the current source language.\n"
                "The currently understood settings are:\n\nlocal or "
 
   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 (const auto &lang : languages)
     {
 
   for (const auto &lang : languages)
     {


@@ -576,7 +570,9 @@ add_set_language_command ()
 
       /* FIXME: i18n: for now assume that the human-readable name is
         just a capitalization of the internal name.  */
 
       /* 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",
+      /* 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.  */
                  toupper (lang->la_name[0]),
                  lang->la_name,
                  /* Capitalize first letter of language name.  */
                  toupper (lang->la_name[0]),


@@ -629,7 +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,


@@ -695,12 +691,70 @@ default_print_array_index (struct value *index_value, struct ui_file *stream,
 }
 
 void
 }
 
 void

-default_get_string (struct value *value, gdb_byte **buffer, int *length,
-                   struct type **char_type, const char **charset)
+default_get_string (struct value *value,
+                   gdb::unique_xmalloc_ptr<gdb_byte> *buffer,
+                   int *length, struct type **char_type, const char **charset)

 {
   error (_("Getting a string is unsupported in this language."));
 }
 
 {
   error (_("Getting a string is unsupported in this language."));
 }
 

+/* 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)
+{
+  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.  */
 
 static int
 /* Define the language that is no language.  */
 
 static int


@@ -709,12 +763,6 @@ unk_lang_parser (struct parser_state *ps)
   return 1;
 }
 
   return 1;
 }
 

-static void
-unk_lang_error (const 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)


@@ -811,7 +859,6 @@ 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,


@@ -823,6 +870,7 @@ 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 */


@@ -839,12 +887,14 @@ const struct language_defn unknown_language_defn =
   default_pass_by_reference,
   default_get_string,
   c_watch_location_expression,
   default_pass_by_reference,
   default_get_string,
   c_watch_location_expression,

-  NULL,                                /* la_get_symbol_name_cmp */
+  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"


@@ -861,7 +911,6 @@ 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,


@@ -873,6 +922,7 @@ 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 */


@@ -889,12 +939,14 @@ const struct language_defn auto_language_defn =
   default_pass_by_reference,
   default_get_string,
   c_watch_location_expression,
   default_pass_by_reference,
   default_get_string,
   c_watch_location_expression,

-  NULL,                                /* la_get_symbol_name_cmp */
+  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 */

 };
 
 \f
 };
 
 \f


@@ -1137,10 +1189,9 @@ For Fortran the default is off; for other languages the default is on."),
 
   add_set_language_command ();
 
 
   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);