http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14932
zhangjingwang at gmail dot com changed:
What |Removed |Added
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CC| |zhangjingwang at gmail dot com
--- Comment #14 from zhangjingwang at gmail dot com ---
#include <stdio.h>
#include <stddef.h>
struct TestStruct {
int array[13];
};
struct TempStruct {
int index;
};
int array_offset(struct TempStruct *index)
{
return offsetof(struct TestStruct, array[index->index]);
}
int main(int argc, char **argv)
{
struct TempStruct tmp = {3};
printf("Offset of array[3] is %d.\n", array_offset(&tmp));
}
test.c: In function 'int array_offset(TempStruct*)':
test.c:14: error: 'index' cannot appear in a constant-expression
test.c:14: error: '->' cannot appear in a constant-expression
This can't be compiled by the following versions of g++ (while it is accepted
by gcc of the same version and clang++ 3.4):
g++ (Debian 4.4.5-8) 4.4.5
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
:AND:
g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
So I don't think this bug is fixed for those versions.
