readline.h requires stdio.h to be compileable #1
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readline.h uses the `FILE` datatype from stdio.h, without an #include for that system header. Upstream documents that it is the responsibility of any code using readline.h to include that other header itself, and relies on the fact that it is documented to declare that this is not a bug. Some distros patch their readline.h with this dependent #include, but for maximum portability the READLINE compile-test function should do it.
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readline.h uses the
FILEdatatype from stdio.h, without an #include for that system header. Upstream documents that it is the responsibility of any code using readline.h to include that other header itself, and relies on the fact that it is documented to declare that this is not a bug. Some distros patch their readline.h with this dependent #include, but for maximum portability the READLINE compile-test function should do it.