problem with cc compiler
David F. Carlson
dave at micropen
Fri Jul 28 01:39:04 AEST 1989
In article <1185 at fcs280s.ncifcrf.gov>, kml at ncifcrf.gov (Kevin Lahey) writes:
] In article <10589 at smoke.BRL.MIL> gwyn at brl.arpa (Doug Gwyn) writes:
] >In article <712 at unsvax.NEVADA.EDU> willey at arrakis.uucp (James P. Willey) says:
] >>... I finally realized that the function name "read" was the culprit.
] >
] >I assume that your problem was that getchar() eventually called read(),
] >expecting the version in the system's C library, but instead found one
] >you had written as part of your program.
] >
]
] then I could see how to avoid a collision. I just don't quite see
] how to insure that a regular function declaration doesn't override
] a library function. Assuming that this magic system works (I don't
] doubt that it does), how can one override a library function when desired?
]
] I made a brief perusal of the second edition of K & R, but I was
] not enlightened. Could you give me some pointers about where to look?
] Obviously, I'm not all up on the new ANSI-C stuff, but I want to be.
One way available under sysV is to use the -M flag for ld(1). The loader
will barf loudly if a duplicate extern reference occurs. This is
not a language "problem" as much as it is a link-loader problem. C does
allow implicit referencing and seperate compilation.
(A programmer once named a function kill(). *Very* ugly things happened.)
--
David F. Carlson, Micropen, Inc.
micropen!dave at ee.rochester.edu
"The faster I go, the behinder I get." --Lewis Carroll
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