Mercurial > cpython-lru_cache-weakref

diff Python/compile.c @ 27846:e9d7102f8278 legacy-trunk

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SF #660455 : patch by NNorwitz. "Unsigned" (i.e., positive-looking, but really negative) hex/oct constants with a leading minus sign are once again properly negated. The micro-optimization for negated numeric constants did the wrong thing for such hex/oct constants. The patch avoids the optimization for all hex/oct constants. This needs to be backported to Python 2.2!
author Guido van Rossum <guido@python.org>
date Wed, 12 Feb 2003 16:57:47 +0000
parents cc01fb654ce3
children 5f5364ac4adb
line wrap: on
line diff
--- a/Python/compile.c	Wed Feb 12 16:37:00 2003 +0000
+++ b/Python/compile.c	Wed Feb 12 16:57:47 2003 +0000
@@ -2069,7 +2069,8 @@
  	    && NCH(ppower) == 1
 	    && TYPE((patom = CHILD(ppower, 0))) == atom
 	    && TYPE((pnum = CHILD(patom, 0))) == NUMBER
-	    && !(childtype == MINUS && is_float_zero(STR(pnum)))) {
+	    && !(childtype == MINUS &&
+		 (STR(pnum)[0] == '0' || is_float_zero(STR(pnum))))) {
 		if (childtype == TILDE) {
 			com_invert_constant(c, pnum);
 			return;