In my opinion, C not mungling its function names imposes unnecessary
complexity on C++, requiring extern 'C' { ... } everywhere in headers.
I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabilit y. Acutally this should have happened long ago.
Regards,
Jim
13  1829 
Jim Mackellan wrote:
In my opinion, C not mungling its function names imposes unnecessary
complexity on C++, requiring extern 'C' { ... } everywhere in headers.
I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabilit y. Acutally this should have happened long ago.
Well that would require C++ to use consistent name mangling, which isn't
the case.
--
Ian Collins.
Jim Mackellan wrote:
In my opinion, C not mungling its function names imposes unnecessary
complexity on C++, requiring extern 'C' { ... } everywhere in headers.
Gosh, big complexity. two extra lines per file...
I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabilit y. Acutally this should have happened long ago.
Before that could happen, C++ would need to standardise the
name-mangling rules. It hasn't.
While we're at it, can you require Fortran, Pascal and Assembler (all
variants for all chipsets) to standardise their formats too?
:-)
--
Mark McIntyre
CLC FAQ <http://c-faq.com/>
CLC readme: <http://www.ungerhu.com/jxh/clc.welcome.txt >
On Sun, 06 Jan 2008 01:02:59 +0100, Jim Mackellan wrote:
I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabilit y. Acutally this should have happened long ago.
There is no need. C implementations are already allowed to and capable of
mangling function and object names in the same way that a specific
implementation of C++ can do, except extended to support unprototyped
function declarations. If they don't, it's not because the C standard
doesn't allow it, or because it's technically impossible, it's simply
because there's not enough demand for it.
>In my opinion, C not mungling its function names imposes unnecessary
>complexity on C++, requiring extern 'C' { ... } everywhere in headers.
Is it *POSSIBLE* for C to mangle function names based on argument
types (interoperabili ty with something else is for the moment put
off for later) and still have legal C programs compile and operate
properly?
I'm specifically thinking of cases where the function is defined
in one source file, is referenced in another source file WITHOUT a
full prototype, and then called with actually correct argument
types. (This is permitted by C99, right?) Will the function
definition and reference always have the SAME mangled name? Since
you don't have a prototype of the function in the file making the
reference, how do you do this?
>I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabili ty. Acutally this should have happened long ago.
I don't think this should happen if it breaks existing C programs.
And I suspect it might. Also, the name mangling should be compatable
with *WHICH* C++ compiler?
In article <sl************ *******@nospam. invalid>,
Jim Mackellan <ji*******@dele ted.invalidwrot e:
>I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabili ty. Acutally this should have happened long ago.
Don't feed the troll, please.
-- Richard
--
:wq
Richard Tobin wrote:
In article <sl************ *******@nospam. invalid>,
Jim Mackellan <ji*******@dele ted.invalidwrot e:
>I believe that in the next version of the ISO standard, C should move to
mungling its function names consistently with C++ to improve
interoperabili ty. Acutally this should have happened long ago.
Don't feed the troll, please.
Isn't that what Sunday afternoons are for?
--
Ian Collins.
Jim Mackellan <ji*******@dele ted.invalidwrot e:
# In my opinion, C not mungling its function names imposes unnecessary
# complexity on C++, requiring extern 'C' { ... } everywhere in headers.
#
# I believe that in the next version of the ISO standard, C should move to
# mungling its function names consistently with C++ to improve
# interoperabilit y. Acutally this should have happened long ago.
Thereby risking some thirty years of binary compatiability.
Do you realize that people are still using software whose source code
is completely disappeared?
--
SM Ryan http://www.rawbw.com/~wyrmwif/
If you plan to shoplift, let us know.
Thanks
In article <13************ *@corp.supernew s.com>
Gordon Burditt <go***********@ burditt.orgwrot e:
>Is it *POSSIBLE* for C to mangle function names based on argument
types (interoperabili ty with something else is for the moment put
off for later) and still have legal C programs compile and operate
properly?
Yes. It requires a trick or two...
>I'm specifically thinking of cases where the function is defined
in one source file, is referenced in another source file WITHOUT a
full prototype, and then called with actually correct argument
types. (This is permitted by C99, right?) Will the function
definition and reference always have the SAME mangled name?
Obviously not -- this is where the trick comes in.
>Since you don't have a prototype of the function in the file making the
reference, how do you do this?
Ultimately, the "link" phase of the translation has to match up
the two functions. The most straightforward method is to have a
"smart linker", which can "de-mangle" names and figure out whether
a "de-mangled" name is to be linked with an "un-adorned" (i.e.,
"never-mangled") name.
To make this more general, one might conceivably use something
similar to weak symbols, where the compiler provides *two* names
for each function: a "fully-qualified" name (one that includes
argument types, i.e., the "mangled" name), and a "low-quality" name
(excluding argument types), along with a directive that ties the
two together. The linker can then proceed with no language-specific
knowledge, by following these "loosely linked" names when exact
matches are unavailable.
A number of existing linkers already "understand " C++ name mangling
to at least some extent, if only to provide human-consumption-form
names in error messages. This means the more-general solution is
not required in practice.
--
In-Real-Life: Chris Torek, Wind River Systems
Salt Lake City, UT, USA (40°39.22'N, 111°50.29'W) +1 801 277 2603
email: forget about it http://web.torek.net/torek/index.html
Reading email is like searching for food in the garbage, thanks to spammers.
"SM Ryan" <wy*****@tang o-sierra-oscar-foxtrot-tango.fake.orgs chreef in
bericht news:13******** *****@corp.supe rnews.com...
Jim Mackellan <ji*******@dele ted.invalidwrot e:
# In my opinion, C not mungling its function names imposes unnecessary
# complexity on C++, requiring extern 'C' { ... } everywhere in headers.
#
# I believe that in the next version of the ISO standard, C should move to
# mungling its function names consistently with C++ to improve
# interoperabilit y. Acutally this should have happened long ago.
Thereby risking some thirty years of binary compatiability.
Do you realize that people are still using software whose source code
is completely disappeared?
Not that I agree with the troll's proposal but changing the standard does
not suddenly break binaries of which the source is missing
>
--
SM Ryan http://www.rawbw.com/~wyrmwif/
If you plan to shoplift, let us know.
Thanks
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