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CDT 2020-06 - 2 strange problems on Fedora 32 [message #1830731]

Sat, 01 August 2020 21:57

Mike Thompson

Messages: 3
Registered: August 2017

Junior Member

I've been struggling with 2 problems since upgrading to Eclipse CDT 202-06 on Fedora 32; I can't find any references to similar problems either here or at the Fedora forum.
Problem 1: I can't get code completion to work in any C++ source files either automatically after typing "." or "->" or with Ctrl-Space - all I get is "no default proposals" in the list. The indexer appears to be working fine, when I type in a library function for example, the colour coding is correct. The Windows-Preferences-C++-Editor-Code completion boxes are all checked as they should be and the project has no project-specific editor settings. I have no clue as to what's missing.
Problem 2: when debugging C++ code in the Debug perspective, it steps happily through the code until a range-for statement (eg "for (auto x : xs) {...}") - it hangs for a second or two then terminates with -1 on exit. If I set a breakpoint at the first statement inside the range-for block and run to there then no problem. Similarly, if I replace the range-for with a for-loop using standard iterators, there is again no problem. I'm using gdb version 9.1-5 and gcc version 10.2.1 (the current packages for the Fedora 32 Workstation distro).
Hopefully I'm missing something obvious, but I know that there have been a few issues with Eclipse in Fedora since Fedora 31.
Thanks in advance,
Mike

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Re: CDT 2020-06 - 2 strange problems on Fedora 32 [message #1830788 is a reply to message #1830731]

Tue, 04 August 2020 03:00

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

Problem (2) sounds like an old bug or perhaps a different manifestation of it
https://sourceware.org/bugzilla/show_bug.cgi?id=23953
You might get a better response at the gdb Bugzilla.
It's doubtful that CDT has anything to do with it.

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Re: CDT 2020-06 - 2 strange problems on Fedora 32 [message #1830826 is a reply to message #1830788]

Tue, 04 August 2020 21:52

Mike Thompson

Messages: 3
Registered: August 2017

Junior Member

Thanks, David, I'll explore the gdb angle further, although bug you referenced with intialised and incremented iterators in a for-loop doesn't crash (that's what I've used as a workaround) - it's only in the range-for loop that I get the bug.
Mike

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Re: CDT 2020-06 - 2 strange problems on Fedora 32 [message #1830832 is a reply to message #1830826]

Wed, 05 August 2020 02:55

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

What happens when you use gdb manually?
What about GNU's DDD?

CDT uses gbd MI which isn't much different than manual commanding.
If it is failing it would seem to be failing in a way similar to the linked bug.

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