Re: Bug#121282: On i386, gcc-3.0 allows $ in indentifiers but not the asm
On Tue, 27 Nov 2001, Daniel Jacobowitz wrote:
> As with that bug, no, GCC should complain about dollars starting
> identifiers. Try using b$c instead of $b.
Oddly enough, our powerpc gcc packages have --no-dollars-in-identifiers
enabled by default, despite gas having no problems handling things like
$b (for the record, alpha, mipseb, and sparc gas also can handle the
sample code in the bug report without a problem and none of the gcc
packages on those machines required an explicit
--dollars-in-identifiers). x86 seems to be the oddball in this regard in
that gas can't handle cases like $b currently and yet our gcc debs allow
those cases by default.
So, my question is, what are the criteria for determining whether or not
gcc should reject identifiers with dollars? I'm of the opinion that, at
least for Debian, gas support for that should make that
determination. After all, if gcc just warns about cases like $b, but gas
rejects the code, then the warnings are redundant unless they say
something like "dollar identifier may not be supported by the assembler on
this target". I still vote for disabling dollared identifiers by default
on x86 and, now, enabling it on ppc (after proper testing, of course).
Thoughts?
C
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