Bug #17646 ยป ruby-__builtin_mul_overflow_long_long.patch
| configure.ac | ||
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RUBY_CHECK_BUILTIN_FUNC(__builtin_types_compatible_p, [__builtin_types_compatible_p(int, int)])
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RUBY_CHECK_BUILTIN_FUNC(__builtin_trap, [__builtin_trap()])
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AS_IF([test "$rb_cv_builtin___builtin_mul_overflow" != no], [
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AC_CACHE_CHECK(for __builtin_mul_overflow with long long arguments, rb_cv_use___builtin_mul_overflow_long_long, [
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AC_LINK_IFELSE([AC_LANG_SOURCE([[
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#pragma clang optimize off
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int
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main(void)
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{
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long long x = 0, y;
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__builtin_mul_overflow(x, x, &y);
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return 0;
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}
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]])],
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rb_cv_use___builtin_mul_overflow_long_long=yes,
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rb_cv_use___builtin_mul_overflow_long_long=no)])
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])
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AS_IF([test "$rb_cv_use___builtin_mul_overflow_long_long" = yes], [
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AC_DEFINE(USE___BUILTIN_MUL_OVERFLOW_LONG_LONG, 1)
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])
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AS_IF([test "$ac_cv_func_qsort_r" != no], [
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AC_CACHE_CHECK(whether qsort_r is GNU version, rb_cv_gnu_qsort_r,
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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-- a/internal/bits.h
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++ b/internal/bits.h
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| ... | ... | |
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MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, FIXNUM_MIN, FIXNUM_MAX)
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#endif
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#ifdef MUL_OVERFLOW_P
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#if defined(MUL_OVERFLOW_P) && defined(USE___BUILTIN_MUL_OVERFLOW_LONG_LONG)
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# define MUL_OVERFLOW_LONG_LONG_P(a, b) MUL_OVERFLOW_P(a, b)
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#else
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# define MUL_OVERFLOW_LONG_LONG_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, LLONG_MIN, LLONG_MAX)
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#endif
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#ifdef MUL_OVERFLOW_P
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# define MUL_OVERFLOW_LONG_P(a, b) MUL_OVERFLOW_P(a, b)
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# define MUL_OVERFLOW_INT_P(a, b) MUL_OVERFLOW_P(a, b)
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#else
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# define MUL_OVERFLOW_LONG_LONG_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, LLONG_MIN, LLONG_MAX)
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# define MUL_OVERFLOW_LONG_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, LONG_MIN, LONG_MAX)
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# define MUL_OVERFLOW_INT_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, INT_MIN, INT_MAX)
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#endif
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