Re: [avr-libc-dev] [RFC] catching misspeeled signal names

[Theodore A. Roth]

On Mon, 19 Apr 2004, Theodore A. Roth wrote:

> Hi,
>
> Attached is an ugly little patch that allows gcc to catch misspeeled
> signal names.
>
> This works by inserting a syntax error into the function argument if the
> signal name is misspeeled. For example, suppose that I do this:
>
>   SIGNAL (fooooo_SIG_OUTPUT_COMPARE1B)
>   {
>   }
>
> with this patch, gcc spits out this error:
>
>   $ avr-gcc -g -Os -Wall -mmcu=atmega128  -save-temps   -c -o vtimer.o 
> vtimer.c
>   vtimer.c:24: error: syntax error before '(' token
>   vtimer.c:24: warning: type defaults to `int' in declaration of 
> `fooooo_SIG_OUTPUT_COMPARE1B'
>   vtimer.c:24: warning: type defaults to `int' in declaration of `signal'
>   vtimer.c:24: error: syntax error before ')' token
>
> And if you look at vtimer.i (the preprocessed temp file), you see this
> is what it got compiled to:
>
>   fooooo_SIG_OUTPUT_COMPARE1B(("<- Misspelled SIG name"), signal) {
>   ...
>   }
>
> Without the -Wall option you don't get as much of a hint, but the
> compile still bombs out:
>
>   $ avr-gcc -g -Os -mmcu=atmega128  -save-temps   -c -o vtimer.o vtimer.c
>   vtimer.c:24: error: syntax error before '(' token
>   vtimer.c:24: error: syntax error before ')' token
>
> This patch is transparent to the end user.

Attached is a bash/sed script for converting all the io*.h files to use
the proposed signal mechanism.

---
Ted Roth
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Jabber ID: address@hidden

sig_filter.sh
Description: Text document