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segfault or abort with IT in small programs #47

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@jasonhemann

Description

@jasonhemann

The program

HAI 1.3    SUM OF 1 AN 2     VISIBLE IT KTHXBYE

executes fine. I'm usingIT as described in the 1.2 spec onexpression syntax.

However, when I try to do something more complicated involvingIT, e.g.,

HAI 1.3    SUM OF 1 AN 2     VISIBLE SUM OF IT AN 3 KTHXBYE

I variously get abort traps or segfaults.

bash-3.2$ lci test.lol 6Segmentation fault: 11bash-3.2$ lci test.lol 6lci(39953,0x7fff73c4a300) malloc: *** error for object 0x7feffae05470: incorrect checksum for freed object - object was probably modified after being freed.*** set a breakpoint in malloc_error_break to debugAbort trap: 6

However, this is an intermittent failure. I can't always seem to produce it. I've been able to reproduce it by modifying this test file and building up to it.

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