modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr20527-1.c (about)

     1  /* PR rtl-optimization/20527
     2     Mishandled postincrement.  This test-case is derived from the
     3     function BZ2_hbCreateDecodeTables in the file huffman.c from
     4     bzip2-1.0.2, hence requiring the following disclaimer copied here:  */
     5  
     6  /*--
     7    This file is a part of bzip2 and/or libbzip2, a program and
     8    library for lossless, block-sorting data compression.
     9  
    10    Copyright (C) 1996-2002 Julian R Seward.  All rights reserved.
    11  
    12    Redistribution and use in source and binary forms, with or without
    13    modification, are permitted provided that the following conditions
    14    are met:
    15  
    16    1. Redistributions of source code must retain the above copyright
    17       notice, this list of conditions and the following disclaimer.
    18  
    19    2. The origin of this software must not be misrepresented; you must 
    20       not claim that you wrote the original software.  If you use this 
    21       software in a product, an acknowledgment in the product 
    22       documentation would be appreciated but is not required.
    23  
    24    3. Altered source versions must be plainly marked as such, and must
    25       not be misrepresented as being the original software.
    26  
    27    4. The name of the author may not be used to endorse or promote 
    28       products derived from this software without specific prior written 
    29       permission.
    30  
    31    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
    32    OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    33    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    34    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
    35    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    36    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
    37    GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    38    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    39    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    40    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    41    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    42  
    43    Julian Seward, Cambridge, UK.
    44    jseward@acm.org
    45    bzip2/libbzip2 version 1.0 of 21 March 2000
    46  
    47    This program is based on (at least) the work of:
    48       Mike Burrows
    49       David Wheeler
    50       Peter Fenwick
    51       Alistair Moffat
    52       Radford Neal
    53       Ian H. Witten
    54       Robert Sedgewick
    55       Jon L. Bentley
    56  
    57    For more information on these sources, see the manual.
    58  --*/
    59  
    60  void f (long *limit, long *base, long minLen, long maxLen) __attribute__ ((__noinline__));
    61  void f (long *limit, long *base, long minLen, long maxLen)
    62  {
    63    long i;
    64    long vec;
    65    vec = 0;
    66    for (i = minLen; i <= maxLen; i++) {
    67      vec += (base[i+1] - base[i]);
    68      limit[i] = vec-1;
    69    }
    70  }
    71  extern void abort (void);
    72  extern void exit (int);
    73  long b[] = {1, 5, 11, 23};
    74  int main (void)
    75  {
    76    long l[3];
    77    f (l, b, 0, 2);
    78    if (l[0] != 3 || l[1] != 9 || l[2] != 21)
    79      abort ();
    80    exit (0);
    81  }