Segfault in Rigol driver (MSO5074) with invalid reported memory depth

[jj5]

After building scopehal-apps with lib/scopehal from PR 1017 and running ngscopeclient:

(master *) $ ngscopeclient
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
ERROR: Invalid memory depth for channel: 1397170226
ERROR: RigolOscilloscope::GetSampleDepthsInterleaved not implemented for this model
Segmentation fault (core dumped)

The problem happens when choosing Add -> Oscilloscope -> scope

That scope is my Rigol MSO5074 which I previously configured using its IP address and port 5555.

core.ngscopeclient.1000.3b08bfe6a6544596b02b61ce4f3c46b1.167611.1765783512000000.zst.gz

[jj5]

---

Mon Dec 15 18:46:23 [bash:5.2.15 jobs:0 error:0 time:138]
root@proviso:/var/lib/systemd/coredump

gdb /usr/local/bin/ngscopeclient core.ngscopeclient.1000.3b08bfe6a6544596b02b61ce4f3c46b1.169739.1765784185000000

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Reading symbols from /usr/local/bin/ngscopeclient...
(No debugging symbols found in /usr/local/bin/ngscopeclient)
[New LWP 169739]
[New LWP 169745]
[New LWP 169740]
[New LWP 169747]
[New LWP 169746]
[New LWP 169751]
[New LWP 169748]
[New LWP 169749]
[New LWP 169759]
[New LWP 169750]
[New LWP 169753]
[New LWP 169743]
[New LWP 169752]
[New LWP 169744]
[New LWP 169741]
[New LWP 169742]
[New LWP 169758]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `ngscopeclient'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x000056034f33bc0e in StreamBrowserTimebaseInfo::StreamBrowserTimebaseInfo(std::shared_ptr) ()
[Current thread is 1 (Thread 0x7f8985261b00 (LWP 169739))]
(gdb) bt
#0 0x000056034f33bc0e in StreamBrowserTimebaseInfo::StreamBrowserTimebaseInfo(std::shared_ptr) ()
#1 0x000056034f33d03a in StreamBrowserDialog::GetTimebaseInfoFor(std::shared_ptr&) ()
#2 0x000056034f33d114 in StreamBrowserDialog::DoFrequencySettings(std::shared_ptr) ()
#3 0x000056034f341f7c in StreamBrowserDialog::renderInstrumentNode(std::shared_ptr) ()
#4 0x000056034f342e11 in StreamBrowserDialog::DoRender() ()
#5 0x000056034f1ebef6 in Dialog::Render() ()
#6 0x000056034f261fea in MainWindow::RenderUI() ()
#7 0x000056034f34e1bd in VulkanWindow::Render() ()
#8 0x000056034f07e8c4 in main ()
(gdb)