Bugs item #775969, was opened at 2003-07-22 16:17
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https://sourceforge.net/tracker/?func=detail&atid=108032&aid=775969&group_id=8032

Category: Compiler (FFI)
Group: 6.0
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: warning: implicit declaration of function foo

Initial Comment:
Hi,

when I compile a simple program with a function 
imported from C using -fffi -O, I get the following:
warning: implicit declaration of function 'foo'

the imported function simply returns its argument 
multiplied by two.

if I compile it without -O option, everything is fine, but 
with the -O option it gives the warning and when I run 
the program it gives the wrong result ( 1.0 for any 
number)

Thanks.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=108032&aid=775969&group_id=8032
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