Hi All

Compile a our source with BM XL C/C++ Enterprise Edition V8.0 for AIX
(Version: 08.00.0000.0000) produces a lot of Informational message
like this:

"aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
was not initialized in its declaration.

n is a variable in procedure an is assigned before used. Compiling the
same sources with other compiles such as AIX version 7.0, gcc on
linux etc do not display this information.

Appreciate your in this regard,

Thanks,
Andreas

andreas.luethi@gmx.net wrote:
> Hi All
>
> Compile a our source with BM XL C/C++ Enterprise Edition V8.0 for AIX
> (Version: 08.00.0000.0000) produces a lot of Informational message
> like this:
>
> "aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
> was not initialized in its declaration.
>
> n is a variable in procedure an is assigned before used. Compiling the
> same sources with other compiles such as AIX version 7.0, gcc on
> linux etc do not display this information.
>
> Appreciate your in this regard,
>
> Thanks,
> Andreas
>

Please go to IBM desk. We are NOT IBM desk.

Thanks for your understanding.


--
jacob navia
jacob at jacob point remcomp point fr
logiciels/informatique
http://www.cs.virginia.edu/~lcc-win32

andreas.luethi@gmx.net wrote:
> Hi All
>
> Compile a our source with BM XL C/C++ Enterprise Edition V8.0 for AIX
> (Version: 08.00.0000.0000) produces a lot of Informational message
> like this:
>
> "aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
> was not initialized in its declaration.
>
> n is a variable in procedure an is assigned before used. Compiling the
> same sources with other compiles such as AIX version 7.0, gcc on
> linux etc do not display this information.
>
> Appreciate your in this regard,
>
> Thanks,
> Andreas
>

P.S. It would be maybe better to SHOW where the compiler
complains, where you think it is wrong with
concrete examples, if not it is not possible to you
anyway.


--
jacob navia
jacob at jacob point remcomp point fr
logiciels/informatique
http://www.cs.virginia.edu/~lcc-win32

On Oct 17, 1:13 pm, jacob navia <ja...@nospam.org> wrote:
> andreas.lue...@gmx.net wrote:
> > Hi All
>
> > Compile a our source with BM XL C/C++ Enterprise Edition V8.0 for AIX
> > (Version: 08.00.0000.0000) produces a lot of Informational message
> > like this:
>
> > "aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
> > was not initialized in its declaration.
>
> > n is a variable in procedure an is assigned before used. Compiling the
> > same sources with other compiles such as AIX version 7.0, gcc on
> > linux etc do not display this information.
>
> > Appreciate your in this regard,
>
> > Thanks,
> > Andreas
>
> P.S. It would be maybe better to SHOW where the compiler
> complains, where you think it is wrong with
> concrete examples, if not it is not possible to you
> anyway.
>
> --
> jacob navia
> jacob at jacob point remcomp point fr
> logiciels/informatiquehttp://www.cs.virginia.edu/~lcc-win32

here is the code snipped:

void aaalib_trim (char *in) {
int n;
for (n = (strlen(in)) - 1; n>= 0; n--)
if (!isspace(in[n]))
break;
in[n+1] = '\0';
}

andreas.luethi@gmx.net wrote:
> On Oct 17, 1:13 pm, jacob navia <ja...@nospam.org> wrote:
>> andreas.lue...@gmx.net wrote:
>>> Hi All
>>> Compile a our source with BM XL C/C++ Enterprise Edition V8.0 for AIX
>>> (Version: 08.00.0000.0000) produces a lot of Informational message
>>> like this:
>>> "aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
>>> was not initialized in its declaration.
>>> n is a variable in procedure an is assigned before used. Compiling the
>>> same sources with other compiles such as AIX version 7.0, gcc on
>>> linux etc do not display this information.
>>> Appreciate your in this regard,
>>> Thanks,
>>> Andreas
>> P.S. It would be maybe better to SHOW where the compiler
>> complains, where you think it is wrong with
>> concrete examples, if not it is not possible to you
>> anyway.
>>
>> --
>> jacob navia
>> jacob at jacob point remcomp point fr
>> logiciels/informatiquehttp://www.cs.virginia.edu/~lcc-win32
>
> here is the code snipped:
>
> void aaalib_trim (char *in) {
> int n;
> for (n = (strlen(in)) - 1; n>= 0; n--)
> if (!isspace(in[n]))
> break;
> in[n+1] = '\0';
> }
>
>

If the code is *exactly* as you posted then...
this looks like a bug in IBM's compiler. Note that version
Version: 08.00.0000.0000 is outdated. I have received a patch
after that one.

OR

The warning just says that you reference a variable
that was not initialized at its declaration... This could
be a very misleading warning. Try to do
> void aaalib_trim (char *in) {
> int n = 78887; // <<<<----- here
> for (n = (strlen(in)) - 1; n>= 0; n--)
> if (!isspace(in[n]))
> break;
> in[n+1] = '\0';
> }

If the warning disappears it means that this is the case.

--
jacob navia
jacob at jacob point remcomp point fr
logiciels/informatique
http://www.cs.virginia.edu/~lcc-win32

andreas.luethi@gmx.net wrote:
>> andreas.lue...@gmx.net wrote:
>> > ... Informational message
>> > like this:
>>
>> > "aaalib.c", line 671.1: 1506-412 (I) Referenced variable "n", which
>> > was not initialized in its declaration.
>>
>> > n is a variable in procedure an is assigned before used. Compiling the
>> > same sources with other compiles such as AIX version 7.0, gcc on
>> > linux etc do not display this information.
>
>here is the code snipped:
>
>void aaalib_trim (char *in) {
> int n;
> for (n = (strlen(in)) - 1; n>= 0; n--)
> if (!isspace(in[n]))
> break;
> in[n+1] = '\0';
>}

An uneducated guess: the compiler misses the initialization in the
for(..) statement. Try this:

void aaalib_trim (char *in) {
int n = strlen(in) - 1;
for ( ; n>= 0; n--)
if (!isspace(in[n]))
break;
in[n+1] = '\0';
}

strlen(in) is always greater than 1, right?

--
Roberto Waltman

[ Please reply to the group,
return address is invalid ]

Roberto Waltman wrote:
>
> void aaalib_trim (char *in) {
> int n = strlen(in) - 1;
> for ( ; n>= 0; n--)
> if (!isspace(in[n]))
> break;
> in[n+1] = '\0';
> }
>
> strlen(in) is always greater than 1, right?
>

strlen can be zero. Then, strlen(in)-1 is -1.
Since he tests for n>=0 the loop never gets
executed.
Then, in[n+1] == in[0] == 0 anyway since
strlen gave zero, so he overwrites a zero with a zero,
a harmless operation


--
jacob navia
jacob at jacob point remcomp point fr
logiciels/informatique
http://www.cs.virginia.edu/~lcc-win32

void aaalib_trim(char *in) {
size_t n = strlen(in);
if(n != 0) {
while(isspace(in[--n]))
;
in[n+1] = 0;
}
return;
}

The compiler is probably buggy.
If the for loop is the issue, the above code will
compile with no errors.
But i wouldn't use a compiler that cannot properly
parse and check C code..