gold/testsuite/overflow_unittest.cc

   1 // overflow_unittest.cc -- test functions that check for overflow.
   2
   3 // Copyright (C) 2016-2021 Free Software Foundation, Inc.
   4 // Written by Cary Coutant <ccoutant@google.com>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #include "gold.h"
  24 #include "reloc.h"
  25
  26 #include <sys/types.h>
  27
  28 #include "test.h"
  29
  30 namespace gold_testsuite
  31 {
  32
  33 using namespace gold;
  34
  35 bool
  36 Overflow_test(Test_report*)
  37 {
  38   CHECK(! Bits<16>::has_unsigned_overflow(0ULL));
  39   CHECK(! Bits<16>::has_unsigned_overflow(1ULL));
  40   CHECK(! Bits<16>::has_unsigned_overflow(0x7fffULL));
  41   CHECK(! Bits<16>::has_unsigned_overflow(0x8000ULL));
  42   CHECK(! Bits<16>::has_unsigned_overflow(0x8001ULL));
  43   CHECK(! Bits<16>::has_unsigned_overflow(0xffffULL));
  44   CHECK(Bits<16>::has_unsigned_overflow(0x10000ULL));
  45   CHECK(Bits<16>::has_unsigned_overflow(0x10001ULL));
  46   CHECK(Bits<16>::has_unsigned_overflow(~0ULL));
  47   CHECK(Bits<16>::has_unsigned_overflow(~0x7fffULL + 1));
  48   CHECK(Bits<16>::has_unsigned_overflow(~0x8000ULL + 1));
  49   CHECK(Bits<16>::has_unsigned_overflow(~0x8001ULL + 1));
  50   CHECK(Bits<16>::has_unsigned_overflow(~0xffffULL + 1));
  51   CHECK(Bits<16>::has_unsigned_overflow(~0x10000ULL + 1));
  52   CHECK(Bits<16>::has_unsigned_overflow(~0x10001ULL + 1));
  53
  54   CHECK(! Bits<16>::has_overflow(0ULL));
  55   CHECK(! Bits<16>::has_overflow(1ULL));
  56   CHECK(! Bits<16>::has_overflow(0x7fffULL));
  57   CHECK(Bits<16>::has_overflow(0x8000ULL));
  58   CHECK(Bits<16>::has_overflow(0x8001ULL));
  59   CHECK(Bits<16>::has_overflow(0xffffULL));
  60   CHECK(Bits<16>::has_overflow(0x10000ULL));
  61   CHECK(Bits<16>::has_overflow(0x10001ULL));
  62   CHECK(! Bits<16>::has_overflow(~0ULL));
  63   CHECK(! Bits<16>::has_overflow(~0x7fffULL + 1));
  64   CHECK(! Bits<16>::has_overflow(~0x8000ULL + 1));
  65   CHECK(Bits<16>::has_overflow(~0x8001ULL + 1));
  66   CHECK(Bits<16>::has_overflow(~0xffffULL + 1));
  67   CHECK(Bits<16>::has_overflow(~0x10000ULL + 1));
  68   CHECK(Bits<16>::has_overflow(~0x10001ULL + 1));
  69
  70   CHECK(! Bits<16>::has_signed_unsigned_overflow64(0ULL));
  71   CHECK(! Bits<16>::has_signed_unsigned_overflow64(1ULL));
  72   CHECK(! Bits<16>::has_signed_unsigned_overflow64(0x7fffULL));
  73   CHECK(! Bits<16>::has_signed_unsigned_overflow64(0x8000ULL));
  74   CHECK(! Bits<16>::has_signed_unsigned_overflow64(0x8001ULL));
  75   CHECK(! Bits<16>::has_signed_unsigned_overflow64(0xffffULL));
  76   CHECK(Bits<16>::has_signed_unsigned_overflow64(0x10000ULL));
  77   CHECK(Bits<16>::has_signed_unsigned_overflow64(0x10001ULL));
  78   CHECK(! Bits<16>::has_signed_unsigned_overflow64(~0ULL));
  79   CHECK(! Bits<16>::has_signed_unsigned_overflow64(~0x7fffULL + 1));
  80   CHECK(! Bits<16>::has_signed_unsigned_overflow64(~0x8000ULL + 1));
  81   CHECK(Bits<16>::has_signed_unsigned_overflow64(~0x8001ULL + 1));
  82   CHECK(Bits<16>::has_signed_unsigned_overflow64(~0xffffULL + 1));
  83   CHECK(Bits<16>::has_signed_unsigned_overflow64(~0x10000ULL + 1));
  84   CHECK(Bits<16>::has_signed_unsigned_overflow64(~0x10001ULL + 1));
  85
  86   CHECK(! Bits<16>::has_unsigned_overflow32(0U));
  87   CHECK(! Bits<16>::has_unsigned_overflow32(1U));
  88   CHECK(! Bits<16>::has_unsigned_overflow32(0x7fffU));
  89   CHECK(! Bits<16>::has_unsigned_overflow32(0x8000U));
  90   CHECK(! Bits<16>::has_unsigned_overflow32(0x8001U));
  91   CHECK(! Bits<16>::has_unsigned_overflow32(0xffffU));
  92   CHECK(Bits<16>::has_unsigned_overflow32(0x10000U));
  93   CHECK(Bits<16>::has_unsigned_overflow32(0x10001U));
  94   CHECK(Bits<16>::has_unsigned_overflow32(~0U));
  95   CHECK(Bits<16>::has_unsigned_overflow32(~0x7fffU + 1));
  96   CHECK(Bits<16>::has_unsigned_overflow32(~0x8000U + 1));
  97   CHECK(Bits<16>::has_unsigned_overflow32(~0x8001U + 1));
  98   CHECK(Bits<16>::has_unsigned_overflow32(~0xffffU + 1));
  99   CHECK(Bits<16>::has_unsigned_overflow32(~0x10000U + 1));
 100   CHECK(Bits<16>::has_unsigned_overflow32(~0x10001U + 1));
 101
 102   CHECK(! Bits<16>::has_overflow32(0U));
 103   CHECK(! Bits<16>::has_overflow32(1U));
 104   CHECK(! Bits<16>::has_overflow32(0x7fffU));
 105   CHECK(Bits<16>::has_overflow32(0x8000U));
 106   CHECK(Bits<16>::has_overflow32(0x8001U));
 107   CHECK(Bits<16>::has_overflow32(0xffffU));
 108   CHECK(Bits<16>::has_overflow32(0x10000U));
 109   CHECK(Bits<16>::has_overflow32(0x10001U));
 110   CHECK(! Bits<16>::has_overflow32(~0U));
 111   CHECK(! Bits<16>::has_overflow32(~0x7fffU + 1));
 112   CHECK(! Bits<16>::has_overflow32(~0x8000U + 1));
 113   CHECK(Bits<16>::has_overflow32(~0x8001U + 1));
 114   CHECK(Bits<16>::has_overflow32(~0xffffU + 1));
 115   CHECK(Bits<16>::has_overflow32(~0x10000U + 1));
 116   CHECK(Bits<16>::has_overflow32(~0x10001U + 1));
 117
 118   CHECK(! Bits<16>::has_signed_unsigned_overflow32(0U));
 119   CHECK(! Bits<16>::has_signed_unsigned_overflow32(1U));
 120   CHECK(! Bits<16>::has_signed_unsigned_overflow32(0x7fffU));
 121   CHECK(! Bits<16>::has_signed_unsigned_overflow32(0x8000U));
 122   CHECK(! Bits<16>::has_signed_unsigned_overflow32(0x8001U));
 123   CHECK(! Bits<16>::has_signed_unsigned_overflow32(0xffffU));
 124   CHECK(Bits<16>::has_signed_unsigned_overflow32(0x10000U));
 125   CHECK(Bits<16>::has_signed_unsigned_overflow32(0x10001U));
 126   CHECK(! Bits<16>::has_signed_unsigned_overflow32(~0U));
 127   CHECK(! Bits<16>::has_signed_unsigned_overflow32(~0x7fffU + 1));
 128   CHECK(! Bits<16>::has_signed_unsigned_overflow32(~0x8000U + 1));
 129   CHECK(Bits<16>::has_signed_unsigned_overflow32(~0x8001U + 1));
 130   CHECK(Bits<16>::has_signed_unsigned_overflow32(~0xffffU + 1));
 131   CHECK(Bits<16>::has_signed_unsigned_overflow32(~0x10000U + 1));
 132   CHECK(Bits<16>::has_signed_unsigned_overflow32(~0x10001U + 1));
 133
 134   return true;
 135 }
 136
 137 Register_test overflow_register("Overflow", Overflow_test);
 138
 139 } // End namespace gold_testsuite.