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1887d822f1
Calling copyObject in C++ without GNU extensions (e.g. when using
-std=c++11 instead of -std=gnu++11) fails with an error like this:
error: use of undeclared identifier 'typeof'; did you mean 'typeid'
This is due to the C compiler used to compile PostgreSQL supporting
typeof, but that function actually not being present in the C++
compiler. This fixes that by explicitely checking for typeof support
in C++, and then either use that or define typeof ourselves as:
std::remove_reference_t<decltype(x)>
According to the paper that led to adding typeof to the C standard,
that's the C++ equivalent of the C typeof:
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2927.htm#existing-decltype
Author: Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://www.postgresql.org/message-id/flat/DGPW5WCFY7WY.1IHCDNIVVT300%2540jeltef.nl
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| .. | ||
| ax_pthread.m4 | ||
| c-compiler.m4 | ||
| c-library.m4 | ||
| check_decls.m4 | ||
| check_modules.pl | ||
| config.guess | ||
| config.sub | ||
| general.m4 | ||
| install-sh | ||
| llvm.m4 | ||
| Makefile | ||
| meson.build | ||
| missing | ||
| perl.m4 | ||
| pkg.m4 | ||
| prep_buildtree | ||
| programs.m4 | ||
| python.m4 | ||
| tcl.m4 | ||