Subject:
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Re: Linking failure when 'making' an lx file
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 25 Mar 2001 13:06:22 GMT
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Viewed:
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1466 times
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> if(unsigned_long_var1 - unsigned_long_var2) > sizeof(unsigned char)) .....
Syntax error: you are missing a parenthesis at the start, right after the
if. But gcc should give a fat error at the ">" sign I believe.
if( COND ) STATEMENT;
if( (ul_var1 - ul_var2) > sizeof(uchar)) STATEMENT;
> By evaluating both sides of the '>' seperatly and assigning the results to
> variables, before testing the '>' between these two variables, the problem
> miraculously disappeared .....strange I know ...
> Does this mean that the compiler is failing whilst trying to optimise the
> code ? I'm still very new to C/C++ so I'd appreciate any information or
> possible explanation of this .....still learning ;-)
It is miraculous that the first code version worked. Are using -Wall to
gcc, to give all possible warnings?
Try the code in another compiler and see how they complain. In general,
trying both visual C++ and gcc on the same code gives a good set of errors
and warnings. Using just one has a tendency to let big bugs slip through.
And remeber to turn off all "language extensions" if you want good error
handling.
/jakob
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Message is in Reply To:
 | | Re: Linking failure when 'making' an lx file
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| (...) Sorry about the extra stuff, the linking problem was due to the compiler trying to find the above link "___ucmpsi2". When I used h8300-hitachi-hms-nm I could see all the methods and links in my code, and this was the only strange looking one. (...) (24 years ago, 28-Aug-00, to lugnet.robotics.rcx.legos)
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