Matti Picus avatar Matti Picus committed a5d3b37

isatty should not raise exception

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Files changed (1)

pypy/rpython/module/ll_os.py

         os_isatty = self.llexternal(underscore_on_windows+'isatty', [rffi.INT], rffi.INT)
 
         def isatty_llimpl(fd):
-            rposix.validate_fd(fd)
+            if not rposix.is_valid_fd(fd):
+                return False
             res = rffi.cast(lltype.Signed, os_isatty(rffi.cast(rffi.INT, fd)))
             return res != 0
 
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