Fix #74 (binding to aggregate with a single member) #433

Job	Run time
linux (g++-9, Debug)	1m 9s
linux-clang-extra (-fms-extensions, Debug)	1m 8s
linux (g++-9, Release)	1m 20s
linux-clang-extra (-fms-extensions, Release)	1m 16s
linux (g++-10, Debug)	1m 12s
linux (g++-10, Release)	1m 10s
linux (g++-11, Debug)	1m 8s
linux-gcc-extra (-D_GLIBCXX_USE_CXX11_ABI=0, Debug)	1m 7s
linux-old (g++-8, Debug)	1m 7s
linux (g++-11, Release)	1m 15s
linux-gcc-extra (-D_GLIBCXX_USE_CXX11_ABI=0, Release)	1m 9s
linux-old (g++-8, Release)	1m 19s
linux (g++-12, Debug)	1m 18s
linux (g++-12, Release)	1m 30s
linux-old (clang++-8, Debug)	1m 20s
linux (g++-13, Debug)	1m 7s
linux-old (clang++-8, Release)	1m 30s
linux (g++-13, Release)	1m 18s
linux-old (clang++-9, Debug)	1m 27s
linux (clang++-13, Debug)	1m 12s
linux-old (clang++-9, Release)	1m 20s
linux (clang++-13, Release)	1m 18s
linux-old (clang++-10, Debug)	1m 18s
linux (clang++-14, Debug)	1m 12s
linux-old (clang++-10, Release)	1m 21s
linux (clang++-14, Release)	1m 23s
linux-old (clang++-11, Debug)	1m 9s
linux (clang++-15, Debug)	1m 15s
linux-old (clang++-11, Release)	1m 26s
linux (clang++-15, Release)	1m 25s
linux-old (clang++-12, Debug)	1m 7s
linux-old (clang++-12, Release)	1m 20s
	40m 36s

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