https://issues.apache.org/bugzilla/show_bug.cgi?id=54468
--- Comment #3 from William A. Rowe Jr. <wr...@apache.org> ---
You are suggesting C (C++) can morph the sizeof(str1) member when
it is explicitly declared? I think not...
struct {
char str1[5];
int inta[4];
}
any more than it would be allowed to morph the sizeof(str1) here;
union {
char str1[5];
int inta[4];
ulong uv;
}
You are confusing the sizeof operator with explicitly computing member offsets;
ssize_t mbroffset = ((char*) x.inta[0] - (char*) x.str1[0])
which would, as you pointed out in comment #2, return something more like '8'
such that inta remains int-aligned.
In any case, the reason for performing something like memcpy(x, sizeof(x)...
is that construct isn't subject to being patched again. The context_id member
can be changed again and again without mauling that code anymore. I prefer the
patch as submitted, for clarity.
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