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SF #660455 : patch by NNorwitz.

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"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!
This commit is contained in:
Guido van Rossum 2003-02-12 16:57:47 +00:00
parent e71b9f830b
commit 66b1259dbc
3 changed files with 14 additions and 8 deletions
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3
Python/compile.c
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@ -2069,7 +2069,8 @@ com_factor(struct compiling *c, node *n)
&& 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;