gdb/testsuite/gdb.base/charset.c

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2001-2025 Free Software Foundation, Inc.

   Contributed by Red Hat, originally written by Jim Blandy.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   Please email any bugs, comments, and/or additions to this file to:
   bug-gdb@gnu.org  */

/* X_string is a null-terminated string in the X charset whose
   elements are as follows.  X should be the name the `set charset'
   command uses for the character set, in lower-case, with any
   non-identifier characters replaced with underscores.  Where a
   character set doesn't have the given character, the string should
   contain the character 'x'.

   [0] --- the `alert' character, '\a'
   [1] --- the `backspace' character, '\b'
   [2] --- the `form feed' character, '\f'
   [3] --- the `line feed' character, '\n'
   [4] --- the `carriage return' character, '\r'
   [5] --- the `horizontal tab' character, '\t'
   [6] --- the `vertical tab' character, '\v'
   [7  .. 32] --- the uppercase letters A-Z
   [33 .. 58] --- the lowercase letters a-z
   [59 .. 68] --- the digits 0-9
   [69] --- the `cent' character
   [70] --- a control character with no defined backslash escape

   Feel free to extend these as you like.  */

#define NUM_CHARS (71)

char ascii_string[NUM_CHARS];
char iso_8859_1_string[NUM_CHARS];
char ebcdic_us_string[NUM_CHARS];
char ibm1047_string[NUM_CHARS];

#ifndef __cplusplus

/* We make a phony wchar_t and then pretend that this platform uses
   UTF-32 (or UTF-16, depending on the size -- same difference for the
   purposes of this test).  */
typedef unsigned int wchar_t;

/* We also define a couple phony types for testing the u'' and U''
   support.  It is ok if these have the wrong size on some platforms
   -- the test case will skip the tests in that case.  */
typedef unsigned short char16_t;
typedef unsigned int char32_t;

#endif

wchar_t utf_32_string[NUM_CHARS];

/* Make sure to use the typedefs.  */
char16_t uvar;
char32_t Uvar;

char16_t *String16;
char32_t *String32;

/* A typedef to a typedef should also work.  */
typedef wchar_t my_wchar_t;
my_wchar_t myvar;

/* Some arrays for simple assignment tests.  */
short short_array[3];
int int_array[3];
long long_array[3];

/* These are unsigned char so we can pass down characters >127 without
   explicit casts or warnings.  */

void
init_string (char string[],
	     unsigned char x,
	     unsigned char alert,
	     unsigned char backspace,
	     unsigned char form_feed,
	     unsigned char line_feed,
	     unsigned char carriage_return,
	     unsigned char horizontal_tab,
	     unsigned char vertical_tab,
	     unsigned char cent,
	     unsigned char misc_ctrl)
{
  int i;

  for (i = 0; i < NUM_CHARS; ++i)
    string[i] = x;
  string[0] = alert;
  string[1] = backspace;
  string[2] = form_feed;
  string[3] = line_feed;
  string[4] = carriage_return;
  string[5] = horizontal_tab;
  string[6] = vertical_tab;
  string[69] = cent;
  string[70] = misc_ctrl;
}


void
fill_run (char string[], int start, int len, int first)
{
  int i;

  for (i = 0; i < len; i++)
    string[start + i] = first + i;
}


void
init_utf32 ()
{
  int i;

  for (i = 0; i < NUM_CHARS; ++i)
    utf_32_string[i] = iso_8859_1_string[i] & 0xff;
}

extern void malloc_stub (void);

int main ()
{

  malloc_stub ();

  /* Initialize ascii_string.  */
  init_string (ascii_string,
               120,
               7, 8, 12,
               10, 13, 9,
               11, 120, 17);
  fill_run (ascii_string, 7, 26, 65);
  fill_run (ascii_string, 33, 26, 97);
  fill_run (ascii_string, 59, 10, 48);

  /* Initialize iso_8859_1_string.  */
  init_string (iso_8859_1_string,
               120,
               7, 8, 12,
               10, 13, 9,
               11, 162, 17);
  fill_run (iso_8859_1_string, 7, 26, 65);
  fill_run (iso_8859_1_string, 33, 26, 97);
  fill_run (iso_8859_1_string, 59, 10, 48);

  /* Initialize ebcdic_us_string.  */
  init_string (ebcdic_us_string,
               167,
               47, 22, 12,
               37, 13, 5,
               11, 74, 17);
  /* In EBCDIC, the upper-case letters are broken into three separate runs.  */
  fill_run (ebcdic_us_string, 7, 9, 193);
  fill_run (ebcdic_us_string, 16, 9, 209);
  fill_run (ebcdic_us_string, 25, 8, 226);
  /* The lower-case letters are, too.  */
  fill_run (ebcdic_us_string, 33, 9, 129);
  fill_run (ebcdic_us_string, 42, 9, 145);
  fill_run (ebcdic_us_string, 51, 8, 162);
  /* The digits, at least, are contiguous.  */
  fill_run (ebcdic_us_string, 59, 10, 240);

  /* Initialize ibm1047_string.  */
  init_string (ibm1047_string,
               167,
               47, 22, 12,
               37, 13, 5,
               11, 74, 17);
  /* In IBM1047, the upper-case letters are broken into three separate runs.  */
  fill_run (ibm1047_string, 7, 9, 193);
  fill_run (ibm1047_string, 16, 9, 209);
  fill_run (ibm1047_string, 25, 8, 226);
  /* The lower-case letters are, too.  */
  fill_run (ibm1047_string, 33, 9, 129);
  fill_run (ibm1047_string, 42, 9, 145);
  fill_run (ibm1047_string, 51, 8, 162);
  /* The digits, at least, are contiguous.  */
  fill_run (ibm1047_string, 59, 10, 240);

  init_utf32 ();

  myvar = utf_32_string[7];

  return 0;            /* all strings initialized */
}