dlerror — obtain error diagnostic for functions in the dlopen API
returns a human-readable, null-terminated string describing
the most recent error that occurred from a call to one of the
functions in the dlopen API since the last call to
dlerror(). The returned string
does not include a
dlerror() returns NULL if no
errors have occurred since initialization or since it was
For an explanation of the terms used in this section, see attributes(7).
The message returned by
dlerror() may reside in a statically
allocated buffer that is overwritten by subsequent
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