GNU logs - #20457, boring messages

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Subject: bug#20457: compiler does not warn about arglist mismatch with obsolete alias
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Package: emacs
Version: 24.5

Byte-compiling the following:
    
    (defun newfunc ()
      t)
    
    (eval-and-compile
      (define-obsolete-function-alias 'oldfunc 'newfunc "25.1"))
    
    (defun blah ()
      (oldfunc t))

warns about oldfunc being obsolete:
  
  In blah:
  foo.el:6:8:Warning: `oldfunc' is an obsolete function (as of 25.1); use
      `newfunc' instead.

however, it says nothing about blah calling oldfunc with the wrong
number of arguments, which leads to a runtime error.