Error: "initializer element is not constant"

[Todd Nathan]

Hi. have this code and compiler problem. GCC 2.95.3, BeOS, error
"initializer element is not constant"

[ ... 3000 + lines deleted for brevity ... ]

#ifdef FILEIO
{ static struct {
char *sfn;
FILE *sfd;
} stdfiles[] = {
{"STDIN", stdin},
{"STDOUT", stdout},
{"STDERR", stderr}
};
int i;
dictword *dw;

for (i = 0; i < ELEMENTS(stdfiles); i++) {
if ((dw = atl_vardef(stdfiles.sfn,
2 * sizeof(stackitem))) != NULL) {
stackitem *si = atl_body(dw);
*si++ = FileSent;
*si = (stackitem) stdfiles.sfd;
}
}
}

[ ... to end of source file deleted for brevity ... ]

------------

and this compiler problem...

[beos@dualP2 ~/forth/atlast-1.0] $ make
cc -O -DMEMSTAT -DALIGNMENT -DEXPORT -c atlast.c -o atlast.o
atlast.c: In function `atl_init':
atlast.c:3247: initializer element is not constant
atlast.c:3247: (near initialization for `stdfiles[0].sfd')
atlast.c:3248: initializer element is not constant
atlast.c:3248: (near initialization for `stdfiles[1].sfd')
atlast.c:3249: initializer element is not constant
atlast.c:3249: (near initialization for `stdfiles[2].sfd')
make: *** [atlast.o] Error 1


I see the property list being built, and shouldnt the FILE* defined as
an element of each pair be enough to allow stdin, stdout and stderr
to be assigned? This is not my code, a package I'm porting. How
to get this to compile would be greatly appreciated, email me directly
please, I'm too ashamed to speak again here publically about this

Thank you!

 

[Artie Gold]

Hi. have this code and compiler problem. GCC 2.95.3, BeOS, error
"initializer element is not constant"

[ ... 3000 + lines deleted for brevity ... ]

#ifdef FILEIO
{ static struct {
char *sfn;
FILE *sfd;
} stdfiles[] = {
{"STDIN", stdin},
{"STDOUT", stdout},
{"STDERR", stderr}
};
int i;
dictword *dw;

for (i = 0; i < ELEMENTS(stdfiles); i++) {
if ((dw = atl_vardef(stdfiles.sfn,
2 * sizeof(stackitem))) != NULL) {
stackitem *si = atl_body(dw);
*si++ = FileSent;
*si = (stackitem) stdfiles.sfd;
}
}
}

[ ... to end of source file deleted for brevity ... ]

------------

and this compiler problem...

[beos@dualP2 ~/forth/atlast-1.0] $ make
cc -O -DMEMSTAT -DALIGNMENT -DEXPORT -c atlast.c -o atlast.o
atlast.c: In function `atl_init':
atlast.c:3247: initializer element is not constant
atlast.c:3247: (near initialization for `stdfiles[0].sfd')
atlast.c:3248: initializer element is not constant
atlast.c:3248: (near initialization for `stdfiles[1].sfd')
atlast.c:3249: initializer element is not constant
atlast.c:3249: (near initialization for `stdfiles[2].sfd')
make: *** [atlast.o] Error 1


I see the property list being built, and shouldnt the FILE* defined as
an element of each pair be enough to allow stdin, stdout and stderr
to be assigned? This is not my code, a package I'm porting. How
to get this to compile would be greatly appreciated, email me directly
please, I'm too ashamed to speak again here publically about this

By the standard, none of stdin, stdout or stderr need necessarily be
constants -- though they are in many implementations.

HTH,
--ag

 

[Kevin Easton]

Hi. have this code and compiler problem. GCC 2.95.3, BeOS, error
"initializer element is not constant"

[ ... 3000 + lines deleted for brevity ... ]

#ifdef FILEIO
{ static struct {
char *sfn;
FILE *sfd;
} stdfiles[] = {
{"STDIN", stdin},
{"STDOUT", stdout},
{"STDERR", stderr}

stdin, stdout and stderr aren't guaranteed to be compile time constants
- and you need compile time constants for aggregate initialisers.

So - the code should be written this way (this will work anywhere, so
should be fixed in the original codebase too):

{ static struct {
char *sfn;
FILE *sfd;
} stdfiles[] = {
{"STDIN", NULL },
{"STDOUT", NULL },
{"STDERR", NULL }
};

int i;
dictword *dw;

stdfiles[0].sfd = stdin;
stdfiles[1].sfd = stdout;
stdfiles[2].sfd = stderr;

/* ... */

[...]

How to get this to compile would be greatly appreciated, email me
directly please, I'm too ashamed to speak again here publically about
this

Sorry, post here, read here - consider the next guy who comes along with
the same problem.

- Kevin.