82 lines
1.1 KiB
Brainfuck
82 lines
1.1 KiB
Brainfuck
#
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/* External variables to defeat constant folding. */
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zero 0;
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one 1;
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i 0;
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ext_t()
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{
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extrn zero, one, i;
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i = zero;
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if (!(i++ == 0)) fail(__LINE__);
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i = one;
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if (!(i-- == 1)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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i = zero;
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if (!(++i == 1)) fail(__LINE__);
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if (!(i == 1)) fail(__LINE__);
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i = one;
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if (!(--i == 0)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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}
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int_t()
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{
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extrn zero, one;
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auto i;
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i = zero;
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if (!(i++ == 0)) fail(__LINE__);
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i = one;
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if (!(i-- == 1)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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i = zero;
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if (!(++i == 1)) fail(__LINE__);
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if (!(i == 1)) fail(__LINE__);
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i = one;
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if (!(--i == 0)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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}
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star_t()
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{
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extrn zero, one, i;
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auto p;
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p = &i;
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i = zero;
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if (!((*p)++ == 0)) fail(__LINE__);
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i = one;
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if (!((*p)-- == 1)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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i = zero;
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if (!(++(*p) == 1)) fail(__LINE__);
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if (!(i == 1)) fail(__LINE__);
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i = one;
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if (!(--(*p) == 0)) fail(__LINE__);
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if (!(i == 0)) fail(__LINE__);
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}
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main()
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{
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ext_t();
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int_t();
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star_t();
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finished();
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return(0);
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}
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