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To: cygwin@cygwin.com
Subject: Re: texlive-install: core dumped
References: <op.wzfrolroofd6j1@nebbiolo.upc.de> <51CEC839.507@cornell.edu> <op.wzfwtr0wofd6j1@nebbiolo.upc.de> <51CEE558.6070104@cornell.edu> <op.wzgaely4ofd6j1@nebbiolo.upc.de> <51CF2925.2060804@cornell.edu> <op.wzggt0qzofd6j1@nebbiolo.upc.de> <51CF63C4.4070001@cornell.edu> <op.wzgxhts2ofd6j1@nebbiolo.upc.de> <51CF9918.5020602@cornell.edu>
Date: Sun, 30 Jun 2013 13:50:19 +0200
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From: "Helmut Karlowski" <helmut.karlowski@ish.de>
Message-ID: <op.wzhpt5zyofd6j1@nebbiolo.upc.de>
In-Reply-To: <51CF9918.5020602@cornell.edu>
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Ken Brown, 30.06.2013 04:34:00:

>> it later. Is there a database of all styles, fonts etc. for all
>> texlive-packages?
>
> Does http://cygwin.com/packages/ give you what you're looking for?  Or  
> maybe you want texlive.tlpdb, available at
>
>    http://www.ctan.org/tex-archive/systems/texlive/tlnet/tlpkg

Not very comfortable, but better than nothing :)

> 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.

-- 
Helmut Karlowski

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