QwtSeriesStore fails with C++20
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rathmann
Starting with C++20, a simple-template-id is no longer allowed as the declarator-id for constructors/destructors. Compiling a program that includes qwt_series_store.h with C++20 will fail on recent compilers. See https://timsong-cpp.github.io/cppwp/n4861/diff.cpp17#class-2 for details. Removing '<T>' should be sufficient to fix this bug.
Other classes may be affected by this as well, but so far I've only encountered the problem with QwtSeriesStore.
Anonymous
fixed in all branches >= 6.2