id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
303	spawnvpe() set COMSPEC and OS2_SHELL to NULL in some cases	KO Myung-Hun		"Hi/2.

When I did 'make check' with automake v1.13.1, gawk failed because it could not open pipe.

I looked into gawk sources, then found that the failed function was popen(). And popen(), maybe system() as well, failed that COMSPEC and OS2_SHELL were NULL. Looking into more, I could know that a root of this problem was spawnvpe() in make, which is compiled by kLIBC. 

envp argument included COMSPEC and OS2_SHELL correctly. Nevertheless a child did not inherit them.

I don't know which conditions trigger this. But this occurs whenever 'make check' with automake v1.13.1.

Fortunately, there is simple workaround. It is to set EMXSHELL. EMXSHELL does not disappear."	defect	new	low	libc-0.7	libc	0.6.5	minor