stdio-common/tst-printf-bz18872.sh

   1 #!/bin/bash
   2 # Copyright (C) 2015-2024 Free Software Foundation, Inc.
   3 # This file is part of the GNU C Library.
   4
   5 # The GNU C Library is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU Lesser General Public
   7 # License as published by the Free Software Foundation; either
   8 # version 2.1 of the License, or (at your option) any later version.
   9
  10 # The GNU C Library is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # Lesser General Public License for more details.
  14
  15 # You should have received a copy of the GNU Lesser General Public
  16 # License along with the GNU C Library; if not, see
  17 # <https://www.gnu.org/licenses/>.
  18
  19 # To test BZ #18872, we need a printf() with 10K arguments.
  20 # Such a printf could be generated with non-trivial macro
  21 # application, but it's simpler to generate the test source
  22 # via this script.
  23
  24 n_args=10000
  25
  26 cat <<'EOF'
  27 #include <stdio.h>
  28 #include <mcheck.h>
  29
  30 /*
  31   Compile do_test without optimization: GCC 4.9/5.0/6.0 takes a long time
  32   to build this source. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67396  */
  33
  34 __attribute__ ((optimize ("-O0")))
  35 int do_test (void)
  36 {
  37     mtrace ();
  38     printf (
  39 EOF
  40
  41 for ((j = 0; j < $n_args / 10; j++)); do
  42   for ((k = 0; k < 10; k++)); do
  43     printf '"%%%d$s" ' $((10 * $j + $k + 1))
  44   done
  45   printf "\n"
  46 done
  47
  48 printf '"%%%d$s",\n' $(($n_args + 1))
  49
  50 for ((j = 0; j < $n_args / 10; j++)); do
  51   for ((k = 0; k < 10; k++)); do
  52     printf '"a", '
  53   done
  54   printf "  /* %4d */\n" $((10 * $j + $k))
  55 done
  56
  57 printf '"\\n");'
  58
  59
  60 cat <<'EOF'
  61
  62   return 0;
  63 }
  64
  65 #define TEST_FUNCTION do_test ()
  66 #include "../test-skeleton.c"
  67
  68 EOF