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bug#27642: 26.0.50; Assertion failure with nested load

From: Paul Eggert
Subject: bug#27642: 26.0.50; Assertion failure with nested load
Date: Thu, 13 Jul 2017 11:24:10 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

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.

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