Control: tags -1 confirmed Relevant part of the failure is:
Libplot.xs:91:13: error: ‘return’ with no value, in function returning
non-void [-Wreturn-mismatch]
91 | return __BEGIN_DECLS;
| ^~~~~~
Libplot.xs:24:1: note: declared here
24 | constant(name, arg)
| ^~~~~~~~
Libplot.xs:97:13: error: ‘return’ with no value, in function returning
non-void [-Wreturn-mismatch]
97 | return __END_DECLS;
| ^~~~~~
Libplot.xs:24:1: note: declared here
24 | constant(name, arg)
| ^~~~~~~~
__BEGIN_DECLS and __END_DECLS look to be defined in util/plot.h
and are empty when compiling with a C compiler, or contain
guards for C code when compiling with a C++ compiler:
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
Which means `return __BEGIN_DECLS` and `return __END_DECLS` make
actually not much sense. Compiling with gcc, they are empty,
thus the return mismatch error. Compiling with g++ would likely
result in more spectacular compiler complaints. I have little
understanding of the intent behind these return values, and do
not know whether to make them return 0, 1 or something else.
The function signature is to return a static double length
floating point value, but the nearest approximation of a double
value to be returned would have been LIBPLOTPERL_VERSION if it
weren't commented out.
As it is, I don't see an obvious way forward apart from putting
dust back below the carpet and ignoring the error, and I would
question whether this function is behaving as intended in the
first place.
In hope this gives some leads,
--
.''`. Étienne Mollier <emoll...@debian.org>
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