98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
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/* Copyright (C) 2000 Free Software Foundation, Inc. */
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/* Test the full range of preprocessor operator precedence. Each
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operator is tested with one of immediately higher precedence to
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verify it is of strictly lower precedence. To avoid complications,
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each test uses just those two operators. Occasionally this assumes
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correct operation of if-then-else, so the first tests verify this. */
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/* { dg-do preprocess } */
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/* Ensure correct functioning of if-then-else. */
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#if 1
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#else
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#error #else block evaluated for true conditional
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#endif
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#if 0
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#error #if block evaluated for false conditional
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#else
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#endif
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/* , not higher than ?. This is not a syntax error if it is. */
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#if 1 ? 0, 1: 1 /* { dg-error "syntax" "? higher precedence than ," } */
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#error
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#endif
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/* : strictly higher than ?. This would give a syntax error otherwise. */
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#if 0 ? 0 : 1 ? 1 : 1
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#endif
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/* || strictly higher than ?:. */
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#if 1 ? 0: 0 || 1
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#error operator ?: has higher precedence than operator ||
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#endif
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/* && strictly higher than ||. */
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#if 1 || 0 && 0
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#else
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#error operator || has higher precedence than operator &&
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#endif
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/* | strictly higher than &&. */
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#if 0 && 0 | 1
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#error operator && has higher precedence than operator |
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#endif
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/* ^ strictly higher than |. */
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#if 1 | 0 ^ 1
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#else
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#error operator | has higher precedence than operator ^
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#endif
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/* & strictly higher than ^. */
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#if 1 ^ 0 & 0
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#else
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#error operator ^ has higher precedence than operator &
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#endif
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/* == (!=) strictly higher than &. */
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#if 0 & 0 == 0
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#error operator & has higher precedence than operator ==
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#endif
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/* < (>, <=, >=) strictly higher than == (!=). */
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#if 0 == 0 < 0
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#else
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#error operator == has higher precedence than operator <
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#endif
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/* << (>>) strictly higher than < (>, <=, >=). */
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#if 1 < 1 << 1
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#else
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#error operator < has higher precedence than operator <<
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#endif
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/* Binary + (-) strictly higher than << (>>). */
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#if 0 << 0 + 1
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#error operator << has higher precedence than binary +
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#endif
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/* Binary * (/, %) strictly higher than binary + (-). */
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#if 1 + 0 * 0
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#else
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#error binary + has higher precedence than binary *
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#endif
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/* Unary operators (!, ~, -, +) strictly higher than binary * (/, %).
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Equality is hard to detect because of right-associativity. */
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#if ~1 * 0
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#error binary * has higher precedence than operator ~
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#endif
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/* () > Unary. Unfortunately this requires an additional operator. */
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#if -(1 - 1)
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#error unary - has higher precedence than operator ()
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#endif
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