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Type:
Bug
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Status: Closed (View Workflow)
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Priority:
Blocker
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 6.20/00
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Component/s: None
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Labels:None
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Environment:
LHCb nightlies against ROOT master
This is what happens:
lxplus780 ~ $ . /cvmfs/sft-nightlies.cern.ch/lcg/nightlies/dev3/Wed/ROOT/HEAD/x86_64-centos7-gcc9-opt/ROOT-env.sh
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lxplus780 ~ $ root -b
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------------------------------------------------------------------
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| Welcome to ROOT 6.19/01 https://root.cern |
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| (c) 1995-2019, The ROOT Team; conception: R. Brun, F. Rademakers |
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| Built for linuxx8664gcc on Jan 15 2020, 03:29:00 |
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| From heads/master@v6-19-01-2427-g97e62a0 |
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| Try '.help', '.demo', '.license', '.credits', '.quit'/'.q' |
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------------------------------------------------------------------
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root [0] #include <TString.h>
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root [1] std::string_view a = "a";
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root [2] std::string b = "b";
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root [3] a == b
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ROOT_prompt_3:1:3: error: use of overloaded operator '==' is ambiguous (with operand types 'std::string_view' (aka 'basic_string_view<char>') and 'std::string' (aka 'basic_string<char>'))
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a == b
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~ ^ ~
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/cvmfs/sft.cern.ch/lcg/releases/gcc/9.2.0-afc57/x86_64-centos7/bin/../lib/gcc/x86_64-pc-linux-gnu/9.2.0/../../../../include/c++/9.2.0/string_view:479:5: note: candidate function [with _CharT = char, _Traits = std::char_traits<char>]
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operator==(basic_string_view<_CharT, _Traits> __x,
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^
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/cvmfs/sft-nightlies.cern.ch/lcg/nightlies/dev3/Wed/ROOT/HEAD/x86_64-centos7-gcc9-opt/include/TEveUtil.h:99:6: note: candidate function
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bool operator==(const TString& t, const std::string& s);
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^
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/cvmfs/sft-nightlies.cern.ch/lcg/nightlies/dev3/Wed/ROOT/HEAD/x86_64-centos7-gcc9-opt/include/TString.h:752:15: note: candidate function
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inline Bool_t operator==(const TString &s1, const TString &s2)
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As there's no automatic conversion from string_view to string, there should not be an automatic conversion from string_view to TString.
- contains
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ROOT-10517 RooFit::CutRange is buggy with multiple range
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- Closed
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