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Date:	Sun, 30 Jun 2013 10:36:40 -0400
From:	Ken Brown <kbrown AT cornell DOT edu>
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To:	cygwin AT cygwin DOT com
Subject:	Re: texlive-install: core dumped
References:	<op DOT wzfrolroofd6j1 AT nebbiolo DOT upc DOT de> <51CEC839 DOT 507 AT cornell DOT edu> <op DOT wzfwtr0wofd6j1 AT nebbiolo DOT upc DOT de> <51CEE558 DOT 6070104 AT cornell DOT edu> <op DOT wzgaely4ofd6j1 AT nebbiolo DOT upc DOT de> <51CF2925 DOT 2060804 AT cornell DOT edu> <op DOT wzggt0qzofd6j1 AT nebbiolo DOT upc DOT de> <51CF63C4 DOT 4070001 AT cornell DOT edu> <op DOT wzgxhts2ofd6j1 AT nebbiolo DOT upc DOT de> <51CF9918 DOT 5020602 AT cornell DOT edu> <op DOT wzhpt5zyofd6j1 AT nebbiolo DOT upc DOT de>
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On 6/30/2013 7:50 AM, Helmut Karlowski wrote:
> Ken Brown, 30.06.2013 04:34:00:
>> If you want to try debugging this with gdb, the texlive-debuginfo
>> package contains the files you need.
>
> Thanks! Found the bug:
>
> In
>
> texk/web2c/luatexdir/lua/loslibext.c:649
>
> In
>
> 632     static void find_env(lua_State * L)
> 633     {
> 634         char *envitem, *envitem_orig;
> (gdb)
> 635         char *envkey;
> 636         char **envpointer;
> 637         envpointer = environ;
> 638         lua_getglobal(L, "os");
> 639         if (envpointer != NULL && lua_istable(L, -1)) {
> 640             luaL_checkstack(L, 2, "out of stack space");
> 641             lua_pushstring(L, "env");
> 642             lua_newtable(L);
> 643             while (*envpointer) {
> 644                 /* TODO: perhaps a memory leak here  */
> (gdb)
> 645                 luaL_checkstack(L, 2, "out of stack space");
> 646                 envitem = xstrdup(*envpointer);
> 647                 envitem_orig = envitem;
> 648                 envkey = envitem;
> 649                 while (*envitem != '=') {
> 650                     envitem++;
> 651                 }
> 652                 *envitem = 0;
> 653                 envitem++;
> 654                 lua_pushstring(L, envkey);
> (gdb)
> 655                 lua_pushstring(L, envitem);
> 656                 lua_rawset(L, -3);
> 657                 envpointer++;
> 658                 free(envitem_orig);
> 659             }
> 660             lua_rawset(L, -3);
> 661         }
> 662         lua_pop(L, 1);
> 663     }
>
>
> It crashes in line 649, because my shell put an item without '=' in the
> environment, and there is no 0-check in find_env(), which appears to be
> a good thing. Fixed.

I'm glad you found it.  Does the malformed environment string also 
explain the other strange errors you were seeing?

Ken


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