Defined? a &&= 0

Ruby Development
1

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% ./ruby -ve ‘p(defined? a &&= 0)’
ruby 1.9.0 (2008-05-02 revision 16284) [i686-linux]
nil

1.8 e$B$G$Oe(B “expression” e$B$G$7$?!#e(B

% ruby-1.8 -ve ‘p(defined? a &&= 0)’
ruby 1.8.7 (2008-05-02 patchlevel 5000) [i686-linux]
“expression”

2

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2008/05/04 17:05 Tanaka A. [email protected]:

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e$BNc30$,5/$-$J$$8B$je(B “expression”
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a == 0 e$B$K$J$k$N$G$9$,!”$3$l$O@5$7$$F0:n$J$N$G$7$g$&$+!#e(B

Index: compile.c

— compile.c (revision 16303)
+++ compile.c (working copy)
@@ -2499,7 +2499,9 @@
if (!lfinish[1]) {
lfinish[1] = NEW_LABEL(nd_line(node));
}

  • ADD_INSNL(ret, nd_line(node), branchunless, lfinish[1]);
  • ADD_INSN(ret, nd_line(node), pop);
  • ADD_INSN(ret, nd_line(node), putnil);
  • ADD_INSNL(ret, nd_line(node), branchif, lfinish[1]);
    if (needstr) {
    ADD_INSN1(ret, nd_line(node), putstring,
    rb_str_new2(“expression”));
    }
3

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wanabe wrote:

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4

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In message “Re: [ruby-dev:34645] Re: defined? a &&= 0”
on Sun, 11 May 2008 15:06:11 +0900, wanabe [email protected]
writes:

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