id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
376	emxomfld: Invalid WKEXT record	dmik		"Happens when linking a really huge XUL.DLL (400MB or os). Comments from here https://github.com/bitwiseworks/mozilla-os2/issues/188#issuecomment-293347063:

Turns out that the link failure is due to this def in weakld.c (part of EMXOMFLD.EXE)

{{{
#define OMF_GETINDEX()  (*u.puch & 0x80 ? ((*u.pch++ & 0x7f) << 8) + *u.pch++ : *u.pch++)
}}}

being:

* Wrongly compiled by GCC 3.3.5 with regard to operator precedence order or such (looks like the compiler bug so far) which leads to a wrong value used as the result of the expression.
* Containing a signed/unsigned bug so that the result is always a negative int if the first byte has a 0x80 bit and the second byte has it as well.

Due to these problems, a weak symbols's index was computed as a negative value out of index table bounds, hence the Invalid WKEXT record error.

With this version of the macro:

{{{
#define OMF_GETINDEX()  (*u.puch & 0x80 ? ((*u.pch++ & 0x7f) << 8) + *u.puch++ : *u.pch++)
}}}
and with EMXOMFLD.EXE built by GCC 4.9.2 I get past this `Invalid WKEXT record` error."	defect	new	normal	new	emx	0.6.6	normal