pub unsafe extern "C" fn svn_error_compose(
chain: *mut svn_error_t,
new_err: *mut svn_error_t,
)Expand description
Add @a new_err to the end of @a chain’s chain of errors. The @a new_err chain will be copied into @a chain’s pool and destroyed, so @a new_err itself becomes invalid after this function.
Either @a chain or @a new_err can be functions that return svn_error_t* but if both are functions they can be evaluated in either order as per the C language rules.