[sdcc-devel] Problem with #define versus variable declaration.

[Patrick G. <P. GEHRIGER>]

Dear SDCC-Team!

Is this a compiler error?

In my project, when I compile my single source file containing something
like

  #define myfoo (72u)

  /* many other things */

  void myfunc(void)
  {
    unsigned char my_local_var= myfoo;

    /* more C code */
  }

the output produced runs well on my target hardware. If I only convert
the line with the #define into a global variable declaration:

  unsigned char myfoo = 72u;

then the target crashes and does NOT run well. No warnings nor errors
were produced while compiling/linking either source. The assembler code
of both versions looks, at first glance, plausible (I mean at the place
in myfunc where   
my_local_var is assigned myfoo). What could the cause be? Would you like
to have the assembler outputs?


Greetings,
Patrick
-- 

            * * *
 Patrick GEHRIGER
 Elektronik und Software
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 DE-64285 DARMSTADT

 Tel, Fax: +49 6151 22093
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