linux-nat: Remove unused parameter

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

diff --git a/gdb/macroexp.c b/gdb/macroexp.c
index d88dac366a7832a59478937d5ca83fa0842e2913..e7a0dadaef7663aacc49f7c936cc18fc46817e35 100644 (file)
--- a/gdb/macroexp.c
+++ b/gdb/macroexp.c
@@ -1,5 +1,5 @@
 /* C preprocessor macro expansion for GDB.
-   Copyright (C) 2002-2013 Free Software Foundation, Inc.
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
    Contributed by Red Hat, Inc.
 
    This file is part of GDB.
@@ -22,7 +22,6 @@
 #include "bcache.h"
 #include "macrotab.h"
 #include "macroexp.h"
-#include "gdb_assert.h"
 #include "c-lang.h"
 
 
@@ -54,8 +53,9 @@ struct macro_buffer
 
   /* Zero if TEXT can be safely realloc'ed (i.e., it's its own malloc
      block).  Non-zero if TEXT is actually pointing into the middle of
-     some other block, and we shouldn't reallocate it.  */
-  int shared;
+     some other block, or to a string literal, and we shouldn't
+     reallocate it.  */
+  bool shared;
 
   /* For detecting token splicing. 
 
@@ -86,19 +86,22 @@ init_buffer (struct macro_buffer *b, int n)
   else
     b->text = NULL;
   b->len = 0;
-  b->shared = 0;
+  b->shared = false;
   b->last_token = -1;
 }
 
 
 /* Set the macro buffer *BUF to refer to the LEN bytes at ADDR, as a
    shared substring.  */
+
 static void
-init_shared_buffer (struct macro_buffer *buf, char *addr, int len)
+init_shared_buffer (struct macro_buffer *buf, const char *addr, int len)
 {
-  buf->text = addr;
+  /* The function accept a "const char *" addr so that clients can
+     pass in string literals without casts.  */
+  buf->text = (char *) addr;
   buf->len = len;
-  buf->shared = 1;
+  buf->shared = true;
   buf->size = 0;
   buf->last_token = -1;
 }
@@ -147,7 +150,7 @@ resize_buffer (struct macro_buffer *b, int n)
     while (b->size <= n)
       b->size *= 2;
 
-  b->text = xrealloc (b->text, b->size);
+  b->text = (char *) xrealloc (b->text, b->size);
 }
 
 
@@ -167,7 +170,7 @@ appendc (struct macro_buffer *b, int c)
 
 /* Append the LEN bytes at ADDR to the buffer B.  */
 static void
-appendmem (struct macro_buffer *b, char *addr, int len)
+appendmem (struct macro_buffer *b, const char *addr, int len)
 {
   int new_len = b->len + len;
 
@@ -360,8 +363,11 @@ get_character_constant (struct macro_buffer *tok, char *p, char *end)
             }
           else if (*p == '\\')
             {
-              p++;
-             char_count += c_parse_escape (&p, NULL);
+             const char *s, *o;
+
+             s = o = ++p;
+             char_count += c_parse_escape (&s, NULL);
+             p += s - o;
             }
           else
            {
@@ -414,8 +420,11 @@ get_string_literal (struct macro_buffer *tok, char *p, char *end)
                    "constants."));
           else if (*p == '\\')
             {
-              p++;
-              c_parse_escape (&p, NULL);
+             const char *s, *o;
+
+             s = o = ++p;
+             c_parse_escape (&s, NULL);
+             p += s - o;
             }
           else
             p++;
@@ -809,7 +818,7 @@ gather_arguments (const char *name, struct macro_buffer *src,
 
   args_len = 0;
   args_size = 6;
-  args = (struct macro_buffer *) xmalloc (sizeof (*args) * args_size);
+  args = XNEWVEC (struct macro_buffer, args_size);
 
   for (;;)
     {
@@ -820,7 +829,7 @@ gather_arguments (const char *name, struct macro_buffer *src,
       if (args_len >= args_size)
         {
           args_size *= 2;
-          args = xrealloc (args, sizeof (*args) * args_size);
+          args = XRESIZEVEC (struct macro_buffer, args, args_size);
         }
 
       /* Initialize the next argument.  */
@@ -853,7 +862,8 @@ gather_arguments (const char *name, struct macro_buffer *src,
                      if (args_len >= args_size)
                        {
                          args_size++;
-                         args = xrealloc (args, sizeof (*args) * args_size);
+                         args = XRESIZEVEC (struct macro_buffer, args,
+                                            args_size);
                        }
                      arg = &args[args_len++];
                      set_token (arg, src->text, src->text);
@@ -974,7 +984,7 @@ substitute_args (struct macro_buffer *dest,
      lexed.  */
   char *lookahead_rl_start;
 
-  init_shared_buffer (&replacement_list, (char *) def->replacement,
+  init_shared_buffer (&replacement_list, def->replacement,
                       strlen (def->replacement));
 
   gdb_assert (dest->len == 0);
@@ -1193,7 +1203,7 @@ expand (const char *id,
     {
       struct macro_buffer replacement_list;
 
-      init_shared_buffer (&replacement_list, (char *) def->replacement,
+      init_shared_buffer (&replacement_list, def->replacement,
                           strlen (def->replacement));
 
       scan (dest, &replacement_list, &new_no_loop, lookup_func, lookup_baton);
@@ -1230,7 +1240,7 @@ expand (const char *id,
                     substitution parameter is the name of the formal
                     argument without the "...".  */
                  init_shared_buffer (&va_arg_name,
-                                     (char *) def->argv[def->argc - 1],
+                                     def->argv[def->argc - 1],
                                      len - 3);
                  is_varargs = 1;
                }
@@ -1325,7 +1335,7 @@ maybe_expand (struct macro_buffer *dest,
     {
       /* Make a null-terminated copy of it, since that's what our
          lookup function expects.  */
-      char *id = xmalloc (src_first->len + 1);
+      char *id = (char *) xmalloc (src_first->len + 1);
       struct cleanup *back_to = make_cleanup (xfree, id);
 
       memcpy (id, src_first->text, src_first->len);
@@ -1409,7 +1419,7 @@ macro_expand (const char *source,
   struct macro_buffer src, dest;
   struct cleanup *back_to;
 
-  init_shared_buffer (&src, (char *) source, strlen (source));
+  init_shared_buffer (&src, source, strlen (source));
 
   init_buffer (&dest, 0);
   dest.last_token = 0;
@@ -1434,7 +1444,7 @@ macro_expand_once (const char *source,
 
 
 char *
-macro_expand_next (char **lexptr,
+macro_expand_next (const char **lexptr,
                    macro_lookup_ftype *lookup_func,
                    void *lookup_baton)
 {