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authorKevin Kuehler <keur@xcf.berkeley.edu>2019-11-10 15:22:35 -0800
committerDrew DeVault <sir@cmpwn.com>2019-11-17 13:19:42 -0500
commit4966b912c6612768a21c3092fd197124ed504ae9 (patch)
tree533f8e86c88ebd1f36b0d753467953e1bf930424 /doc/aerc-config.5.scd
parentc655afa32bea3208885386cc3e600d19c934dd39 (diff)
commands/account: Disable :view for deleted msgs
Allowing the user to view deleted messages creates all sorts of race conditions. The most devious race condition is pv.source can be set to a nil while another PartViewer is still running a goroutine in attemptCopy. Here is a trace when this happens. goroutine 76 [running]: io.copyBuffer(0x7f8ad02641d0, 0xc00040f590, 0x0, 0x0, 0xc0007cc000, 0x8000, 0x8000, 0x0, 0x0, 0x8b3d60) /usr/lib/go/src/io/io.go:402 +0x101 io.Copy(...) /usr/lib/go/src/io/io.go:364 git.sr.ht/~sircmpwn/aerc/widgets.(*PartViewer).attemptCopy.func4(0xc00017efd0, 0xc0004da7c0) /home/keur/repos/aerc/widgets/msgviewer.go:576 +0x611 created by git.sr.ht/~sircmpwn/aerc/widgets.(*PartViewer).attemptCopy /home/keur/repos/aerc/widgets/msgviewer.go:544 +0x144 We could add a guard in store.FetchBodyPart to only call the callback when msg.Part.Reader != nil, but we still get a hanging pager. Therefore it seems more reasonable to disable this completely. Signed-off-by: Kevin Kuehler <keur@xcf.berkeley.edu>
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