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21 lines
697 B
Plaintext
21 lines
697 B
Plaintext
http://gcc.gnu.org/ml/gcc-patches/2004-07/msg00968.html
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http://blog.janik.cz/archives/2004-11-23T22_37_37.html
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--- gcc/fold-const.c.orig Tue Jun 1 08:15:12 2004
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+++ gcc/fold-const.c Wed Nov 24 16:39:02 2004
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@@ -3535,7 +3535,13 @@
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HOST_WIDE_INT hi;
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int prec;
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- prec = TYPE_PRECISION (etype);
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+ /* For enums the comparison will be done in the underlying type,
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+ so using enum's precision is wrong here.
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+ Consider e.g. enum { A, B, C, D, E }, low == B and high == D. */
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+ if (TREE_CODE (etype) == ENUMERAL_TYPE)
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+ prec = GET_MODE_BITSIZE (TYPE_MODE (etype));
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+ else
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+ prec = TYPE_PRECISION (etype);
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if (prec <= HOST_BITS_PER_WIDE_INT)
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{
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hi = 0;
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