Here is the problem. The auto-import feature for non scalar syms works only
if the syms are the DATA section. So for constant arrays this not working.
The following simple example will not work properly:
clib.c:
const char arr[] = "azertyazertyazertyazertyazertyazertyazertyazertyazerty";
$ gcc -shared -o clib.dll clib.c
main.c:
#include <stdio.h>
extern const char arr[];
int main (void)
{
int k;
for (k=0; k<6; k++)
printf ("arr[%d]=%c\n", k, arr[k]);
}
$ gcc -o main main.c clib.dll
$ ./main
arr[0]=�
arr[1]=%
arr[2]=�
arr[3]=`
arr[4]=@
arr[5]=
Of course the obvious fix is to remove the "const" attribute. But this is not
a general solution. The problem occurs, for example, in the standard Ada
libraries where it is not an option to change a constant to a variable (the
spec are part of the standard).
Is there a solution with the current GCC ?
If not a solution would be to add an option to GCC for force all such syms
into the DATA section.
Thoughts ?
Let me know if there is a more appropriate mailing-list to discuss this issue.
Thanks,
Pascal.
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