eliminate gcc dependency for testing char signedness in limits.h
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@ -9,7 +9,7 @@
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/* Support signed or unsigned plain-char */
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/* Support signed or unsigned plain-char */
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#ifdef __CHAR_UNSIGNED__
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#if '\0'-1 > 0
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#define CHAR_MIN 0
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#define CHAR_MIN 0
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#define CHAR_MAX 255
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#define CHAR_MAX 255
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#else
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#else
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