gcc/testsuite/gcc.dg/pr54121.c

   1 /* PR target/54121 */
   2 /* Reported by Jan Engelhardt <jengelh@inai.de> */
   3
   4 /* { dg-do compile { target fpic } } */
   5 /* { dg-options "-std=gnu99 -O -fPIC -fprofile-generate" } */
   6
   7 typedef __SIZE_TYPE__ size_t;
   8 typedef unsigned char uint8_t;
   9
  10 extern void *memcpy (void *__restrict __dest,
  11        __const void *__restrict __src, size_t __n)
  12      __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));
  13
  14 typedef enum {
  15  LZMA_OK = 0,
  16  LZMA_STREAM_END = 1,
  17  LZMA_NO_CHECK = 2,
  18  LZMA_UNSUPPORTED_CHECK = 3,
  19  LZMA_GET_CHECK = 4,
  20  LZMA_MEM_ERROR = 5,
  21  LZMA_MEMLIMIT_ERROR = 6,
  22  LZMA_FORMAT_ERROR = 7,
  23  LZMA_OPTIONS_ERROR = 8,
  24  LZMA_DATA_ERROR = 9,
  25  LZMA_BUF_ERROR = 10,
  26  LZMA_PROG_ERROR = 11,
  27 } lzma_ret;
  28
  29 typedef enum {
  30  LZMA_RUN = 0,
  31  LZMA_SYNC_FLUSH = 1,
  32  LZMA_FULL_FLUSH = 2,
  33  LZMA_FINISH = 3
  34 } lzma_action;
  35
  36 typedef struct {
  37  void *( *alloc)(void *opaque, size_t nmemb, size_t size);
  38  void ( *free)(void *opaque, void *ptr);
  39  void *opaque;
  40 } lzma_allocator;
  41
  42 typedef struct lzma_coder_s lzma_coder;
  43
  44 typedef struct lzma_next_coder_s lzma_next_coder;
  45
  46 typedef struct lzma_filter_info_s lzma_filter_info;
  47
  48 typedef lzma_ret (*lzma_init_function)(
  49   lzma_next_coder *next, lzma_allocator *allocator,
  50   const lzma_filter_info *filters);
  51
  52 typedef lzma_ret (*lzma_code_function)(
  53   lzma_coder *coder, lzma_allocator *allocator,
  54   const uint8_t *restrict in, size_t *restrict in_pos,
  55   size_t in_size, uint8_t *restrict out,
  56   size_t *restrict out_pos, size_t out_size,
  57   lzma_action action);
  58
  59 typedef void (*lzma_end_function)(
  60   lzma_coder *coder, lzma_allocator *allocator);
  61
  62 typedef struct {
  63  uint8_t *buf;
  64  size_t pos;
  65  size_t size;
  66 } lzma_dict;
  67
  68 typedef struct {
  69  lzma_coder *coder;
  70  lzma_ret (*code)(lzma_coder *restrict coder,
  71    lzma_dict *restrict dict, const uint8_t *restrict in,
  72    size_t *restrict in_pos, size_t in_size);
  73 } lzma_lz_decoder;
  74
  75 struct lzma_coder_s {
  76  lzma_dict dict;
  77  lzma_lz_decoder lz;
  78 };
  79
  80 lzma_ret
  81 decode_buffer(lzma_coder *coder,
  82   const uint8_t *restrict in, size_t *restrict in_pos,
  83   size_t in_size, uint8_t *restrict out, size_t *restrict out_pos)
  84 {
  85  while (1) {
  86   const size_t dict_start = coder->dict.pos;
  87   const lzma_ret ret
  88     = coder->lz.code( coder->lz.coder, &coder->dict, in, in_pos, in_size);
  89   const size_t copy_size = coder->dict.pos - dict_start;
  90   memcpy(out + *out_pos, coder->dict.buf + dict_start, copy_size);
  91   if (ret != LZMA_OK || coder->dict.pos < coder->dict.size)
  92    return ret;
  93  }
  94 }