DICTPAYLOAD exceeds maximum length 65536

Barth · September 16, 2020, 11:50am

Hi,

I have started getting the following warning during my compilation:

[43/114] Building CXX object Framework/CMakeFiles/QualityControl.dir/G__QualityControl.cxx.o
Framework/G__QualityControl.cxx:917:38: warning: string literal of length 74627 exceeds maximum length 65536 that C++ compilers are required to support [-Woverlength-strings]
    static const char* payloadCode = R"DICTPAYLOAD(

It gets me worried.

The linkdef contains just 3 namespaces and 6 classes, nothing extravagant.

Is it something you have already seen ? something ok or something bad ?

Thank you
Barth

EDIT let me know if you want me to upload the dictionary.

_ROOT Version: 6.20.02
Platform: MacOS 10.15.6
Compiler: clang 10.0.1

jblomer · September 16, 2020, 12:46pm

Perhaps @axel or @vvassilev have seen this before. Does what comes after R"DICTPAYLOAD( in G__QualityControl.cxx gives a hint?

Barth · September 16, 2020, 12:59pm

Thank you Jakob. It is a concatenation of all my header files.

vvassilev · September 16, 2020, 2:13pm

Can you paste the rootcling invocation?

Barth · September 16, 2020, 2:37pm

Hi,

I hope this is what you need. The build system we use in alice makes it a bit difficult to get to the actual invocation. Here it is though.

/usr/local/Cellar/cmake/3.18.2/bin/cmake -E env LD_LIBRARY_PATH=/Users/bvonhall/dev/alice/sw/osx_x86-64/ROOT/v6-20-02-alice7-1/lib /Users/bvonhall/dev/alice/sw/osx_x86-64/ROOT/v6-20-02-alice7-1/bin/rootcling -f /Users/bvonhall/dev/alice/sw/BUILD/QualityControl-latest/QualityControl/Framework/G__QualityControl.cxx -inlineInputHeader -rmf /Users/bvonhall/dev/alice/sw/BUILD/QualityControl-latest/QualityControl/lib/libQualityControl.rootmap -rml libQualityControl.dylib -I/Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/include -I/Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/src -I/Users/bvonhall/dev/alice/sw/BUILD/QualityControl-latest/QualityControl/Framework/include -I/Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/ -I/Users/bvonhall/dev/alice/sw/osx_x86-64/boost/v1.72.0-alice1-1/include -I/Users/bvonhall/dev/alice/sw/osx_x86-64/FairLogger/v1.8.0-1/include 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/Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/include/QualityControl/Reductor.h /Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/include/QualityControl/MonitorObjectCollection.h /Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/include/QualityControl/PolicyManager.h /Users/bvonhall/dev/alice/sw/SOURCES/QualityControl/aggregators/0/Framework/include/QualityControl/LinkDef.h

Barth · September 22, 2020, 10:07am

Ok, problem understood.
I was passing most of the headers in my project to rootcling whereas I should have passed only the one needed with regards to the LinkDef.

system · October 6, 2020, 10:08am

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