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bug#40046: 28.0.50; infinite recursion futimens -> fdutimens -> futimens

From: Paul Eggert
Subject: bug#40046: 28.0.50; infinite recursion futimens -> fdutimens -> futimens -> ...
Date: Thu, 12 Mar 2020 16:47:54 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0

On 3/12/20 3:03 PM, Mattias Engdegård wrote:
On macOS 10.14, futimens in lib/futimens.c calls fdutimens in lib/utimens.c 
which calls futimens again, recursing until the stack is full. This cause 
Fcopy_file to crash, for instance.

No doubt I've made a silly configuration error, but I've wiped the 
(out-of-tree) build directory, regenerated configure and all. As expedience I 
commented out the futimens definition. Not sure how this is supposed to work 
really -- what am I missing? HAVE_FUTIMENS is set in config.h.

This feels like Bug#39948. I suggest cloning the source directory from git master, and starting afresh. Merely wiping out the build directory does not always suffice (I don't know why).

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