Re: emacs server fails to start with large uid on unix

[Stefan Monnier]

> I have a large unix uid:
> $ id
> uid=800154870(ruttbe) gid=705(www)

> it seems the emacs server of pretest 92 can't cope with this, possibly
> b/c of the limit on emacs lisp's integer size.  perhaps calc should be
> used, as it can handle bignums?  also `file-attributes' may have a problem 
> with this large UID.  see the backtrace upon M-x
> server-start after an emacs -q:

I don't know if the patch below fixes your problem, but it should at least
solve one part.
Should I install it?


        Stefan


--- orig/src/editfns.c
+++ mod/src/editfns.c
@@ -3604,7 +3604,12 @@
                if (*format != 'd' && *format != 'o' && *format != 'x'
                    && *format != 'i' && *format != 'X' && *format != 'c')
                  error ("Invalid format operation %%%c", *format);
-               args[n] = Ftruncate (args[n], Qnil);
+               /* This fails unnecessarily if args[n] is bigger than
+                  most-positive-fixnum but smaller than MAXINT.
+                  These cases are important because we sometimes use floats
+                  to represent such integer values (typically such values
+                  come from UIDs or PIDs).  */
+               /* args[n] = Ftruncate (args[n], Qnil); */
              }
 
            /* Note that we're using sprintf to print floats,
@@ -3772,8 +3777,13 @@
                  else
                    sprintf (p, this_format, XUINT (args[n]));
                }
-             else
+             else if (format[-1] == 'e' || format[-1] == 'f' || format[-1] == 
'g')
                sprintf (p, this_format, XFLOAT_DATA (args[n]));
+             else if (format[-1] == 'd')
+               sprintf (p, this_format, (EMACS_INT) XFLOAT_DATA (args[n]));
+             else
+               /* Don't sign-extend for octal or hex printing.  */
+               sprintf (p, this_format, (EMACS_UINT) XFLOAT_DATA (args[n]));
 
              if (p > buf
                  && multibyte