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[bug #59601] buffer over-read on malformed environment variable

From: eric lagergren
Subject: [bug #59601] buffer over-read on malformed environment variable
Date: Wed, 2 Dec 2020 15:07:48 -0500 (EST)
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36 
Follow-up Comment #1, bug #59601 (project make):

This seems to be eight years old:
https://git.savannah.gnu.org/cgit/make.git/diff/main.c?id=cc85b927cdc1a4dad3217842215903a45044fc43

Indeed, checking whether *ep is NULL fixes the bug.

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