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Indexer fails: ambiguous node while parsing .cpp [message #1855321]

Fri, 07 October 2022 22:39

juanito perez

Messages: 6
Registered: July 2021

Junior Member

Suddently eclipse fails to index my source files correctly.
Version: 2022-09 (4.25.0)
Build id: 20220908-1902
I ran it with

eclipse -debug debug.options -consolelog -vm /usr/lib/jvm/java-19-jdk/bin/

debug.options file:

org.eclipse.cdt.core/debug=true
org.eclipse.cdt.core/debug/pdomtimings=true
org.eclipse.cdt.core/debug/indexer=true
org.eclipse.cdt.core/debug/parser=true
org.eclipse.cdt.core/debug/deltaprocessor=true
org.eclipse.cdt.core/debug/scanner=true
org.eclipse.cdt.core/debug/model=true
org.eclipse.cdt.core/debug/indexer/statistics=true
org.eclipse.cdt.core/debug/indexer/activity=true
org.eclipse.cdt.core/debug/indexer/problems=false

I include the full log, these are what I think the key error messages (there are many more very similar):

!ENTRY org.eclipse.cdt.core 4 0 2022-10-07 19:24:18.336                                                                                                        
!MESSAGE Error: Encountered an ambiguous node "std::uses_allocator_construction_args<_Tp1>(__a,                                                                
            std::forward<_Up>(__u))" at /usr/include/c++/12.2.0/bits/uses_allocator_args.h, line 150 while parsing /home/oiu7/eclipse-workspace/Cmas/src/Cmas.c
pp                                                                                                                                                             
!STACK 0                                                                                                                                                       
org.eclipse.cdt.internal.core.parser.ParserException: Encountered an ambiguous node "std::uses_allocator_construction_args<_Tp1>(__a,
            std::forward<_Up>(__u))" at /usr/include/c++/12.2.0/bits/uses_allocator_args.h, line 150 while parsing /home/oiu7/eclipse-workspace/Cmas/src/Cmas.c
pp

Attachment: eclipse.log4
(Size: 9.17KB, Downloaded 81 times)
Attachment: Cmas.cpp
(Size: 2.64KB, Downloaded 123 times)
Attachment: Cmas.hpp
(Size: 0.83KB, Downloaded 91 times)

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Re: Indexer fails: ambiguous node while parsing .cpp [message #1855331 is a reply to message #1855321]

Sun, 09 October 2022 04:36

juanito perez

Messages: 6
Registered: July 2021

Junior Member

I found out that this issue is also reproducible on windows. It is caused by selecting C++20 as the default dialect. Changing it to i.e C++17 solves the parsing problems. Is C++20 not supported properly by the CDT indexer yet?

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Re: Indexer fails: ambiguous node while parsing .cpp [message #1855364 is a reply to message #1855331]

Mon, 10 October 2022 19:27

Kent Dorfman

Messages: 21
Registered: December 2020

Junior Member

see my related post. I have problems with the scanner and C++17 dialect: lots of bogus errors that don't really exist, as far as the standard and makefile are concerned.

As many years as eclipse has been around it is a bit depressing how "unstable" it can be. I chalk it up to the common and very broad problem with collaborative development model: no draconian authority willing to enforce project goals and quality/professional standards. Code quality often takes a back seat to social issues.

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