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1 | Article 20341 of comp.lang.perl: |
| 2 | Path: netlabs!news.cerf.net!mvb.saic.com!MathWorks.Com!news.kei.com!hookup!swrinde!gatech!taco.cc.ncsu.edu!taco.cc.ncsu.edu!setzer |
| 3 | From: setzer@math.ncsu.edu (William Setzer) |
| 4 | Newsgroups: comp.lang.perl |
| 5 | Subject: perl5a6 bug: sort sub @ary |
| 6 | Date: 30 Mar 94 13:49:20 |
| 7 | Organization: The Chebychev Church of Probability |
| 8 | Lines: 23 |
| 9 | Distribution: world |
| 10 | Message-ID: <SETZER.94Mar30134920@math.math.ncsu.edu> |
| 11 | NNTP-Posting-Host: math.ncsu.edu |
| 12 | |
| 13 | Ok, here's a weird one. Using the precompiled perl5a6 binary for the |
| 14 | sun, the following dumps core: |
| 15 | ---- |
| 16 | @S = (0, 1, 2, 3); |
| 17 | for ("A", "D", "b", "c") { $foo{$i++} = $_; } |
| 18 | # for (sort { lc($foo{$a}) cmp lc($foo{$b}) } @S) { print $foo{$_}, "\n"; } |
| 19 | for (sort Alpha @S) { print $foo{$_}, "\n"; } |
| 20 | |
| 21 | sub Alpha { lc($foo{$a}) cmp lc($foo{$b}); } |
| 22 | ---- |
| 23 | [Output] |
| 24 | Segmentation fault (core dumped) |
| 25 | ---- |
| 26 | However, if you comment out the "sort Alpha" and uncomment the "sort |
| 27 | {lc(...) cmp lc(...) }" line, everything works as expected. Also note |
| 28 | that if you uncomment both "sort"s, everything also works as expected. |
| 29 | Do-do-do-do [twilight zone music :-]. |
| 30 | |
| 31 | William |
| 32 | |
| 33 | PS: Does anyone actually care about these bug reports? I thought I |
| 34 | remember Larry saying that he preferred them in c.l.p., but it |
| 35 | wouldn't be the first time my memory has fritzed. |
| 36 | |
| 37 | |
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