bug#27642: 26.0.50; Assertion failure with nested load

[Paul Eggert]

On 07/13/2017 11:08 AM, Eli Zaretskii wrote:
> Doesn't that get in the
> way of the outer call, if it then tries to resume its readevalloop?

The outer call reassigns its own value to the 'infile' static variable 
before resuming the loop. This reassignment was needed even before my 
recent lread.c changes (the static variable was called 'instream' back 
then). A reassignment is needed because the outer call cannot continue 
to read from a closed FILE * value, as that would have undefined behavior.

Admittedly this structure is rickety. lread.c should be made reentrant. 
But that would be a bigger project.