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%module preproc_expr
// Check expressions which suffered from incorrect operator precedence prior
// to SWIG 4.1.0.
%inline %{
// `!` should have higher precedence than binary `+`.
#if !0 + 1
#else
# error Bad preprocessor expression operator precedence
#endif
// `!=` should have higher precedence than bitwise and.
#if 1 & 2 != 0
#else
# error Bad preprocessor expression operator precedence
#endif
// `==` should have higher precedence than bitwise or.
#if (2 | 1 == 3) != 2
# error Bad preprocessor expression operator precedence
#endif
// `!=` should have higher precedence than bitwise xor.
#if 1 ^ 2 != 4
# error Bad preprocessor expression operator precedence
#endif
// `<` should have higher precedence than '=='.
#if 2 == 2 < 2
# error Bad preprocessor expression operator precedence
#endif
%}
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