gcc/testsuite/g++.dg/pr68770.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3 /* This test used to trigger the use of an uninitialised field (t_icode)
   4    in the secondary_reload_info structure created in ira-costs.c:copy_cost().
   5    Unfortunately the test only generates a problem if run under valgrind...  */
   6 typedef unsigned long int uint64_t;
   7
   8 namespace __gnu_parallel
   9 {
  10    enum _AlgorithmStrategy { heuristic, force_sequential, force_parallel };
  11    enum _SortAlgorithm     { MWMS, QS, QS_BALANCED };
  12    enum _MultiwayMergeAlgorithm  { LOSER_TREE };
  13    enum _PartialSumAlgorithm     { RECURSIVE, LINEAR };
  14    enum _SplittingAlgorithm     { SAMPLING, EXACT };
  15    enum _FindAlgorithm     { GROWING_BLOCKS, CONSTANT_SIZE_BLOCKS, EQUAL_SPLIT };
  16    typedef uint64_t _SequenceIndex;
  17    struct _Settings
  18    {
  19      _AlgorithmStrategy algorithm_strategy;
  20      _SortAlgorithm sort_algorithm;
  21      _PartialSumAlgorithm partial_sum_algorithm;
  22      _MultiwayMergeAlgorithm multiway_merge_algorithm;
  23      _FindAlgorithm find_algorithm;
  24      _SplittingAlgorithm sort_splitting;
  25      _SplittingAlgorithm merge_splitting;
  26      _SplittingAlgorithm multiway_merge_splitting;
  27      _SequenceIndex accumulate_minimal_n;
  28      unsigned int adjacent_difference_minimal_n;
  29      _SequenceIndex count_minimal_n;
  30      _SequenceIndex fill_minimal_n;
  31      double find_increasing_factor;
  32      _SequenceIndex find_initial_block_size;
  33      _SequenceIndex find_maximum_block_size;
  34      _SequenceIndex find_sequential_search_size;
  35      _SequenceIndex for_each_minimal_n;
  36      _SequenceIndex generate_minimal_n;
  37      _SequenceIndex max_element_minimal_n;
  38      _SequenceIndex merge_minimal_n;
  39      unsigned int merge_oversampling;
  40      _SequenceIndex min_element_minimal_n;
  41      _SequenceIndex multiway_merge_minimal_n;
  42      int multiway_merge_minimal_k;
  43      unsigned int multiway_merge_oversampling;
  44      _SequenceIndex nth_element_minimal_n;
  45      _SequenceIndex partition_chunk_size;
  46      double partition_chunk_share;
  47      _SequenceIndex partition_minimal_n;
  48      _SequenceIndex partial_sort_minimal_n;
  49      float partial_sum_dilation;
  50      unsigned int partial_sum_minimal_n;
  51      float find_scale_factor;
  52
  53      explicit _Settings() :
  54        algorithm_strategy(heuristic),
  55        sort_algorithm(MWMS),
  56        partial_sum_algorithm(LINEAR),
  57        multiway_merge_algorithm(LOSER_TREE),
  58        find_algorithm(CONSTANT_SIZE_BLOCKS),
  59        sort_splitting(EXACT),
  60        merge_splitting(EXACT),
  61        multiway_merge_splitting(EXACT),
  62        accumulate_minimal_n(1000),
  63        adjacent_difference_minimal_n(1000),
  64        count_minimal_n(1000),
  65        fill_minimal_n(1000),
  66        find_increasing_factor(2.0),
  67        find_initial_block_size(256),
  68        find_maximum_block_size(8192),
  69        find_sequential_search_size(256),
  70        for_each_minimal_n(1000),
  71        generate_minimal_n(1000),
  72        max_element_minimal_n(1000),
  73        merge_minimal_n(1000),
  74        merge_oversampling(10),
  75        min_element_minimal_n(1000),
  76        multiway_merge_minimal_n(1000),
  77        multiway_merge_minimal_k(2),
  78        multiway_merge_oversampling(10),
  79        nth_element_minimal_n(1000),
  80        partition_chunk_size(1000),
  81        partition_chunk_share(0.0),
  82        partition_minimal_n(1000),
  83        partial_sort_minimal_n(1000),
  84        partial_sum_dilation(1.0f),
  85        partial_sum_minimal_n(1000),
  86        find_scale_factor(0.01f)
  87      { }
  88    };
  89 }
  90
  91 namespace
  92 {
  93   __gnu_parallel::_Settings s;
  94 }
  95