https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65201
Mikhail Maltsev <maltsevm at gmail dot com> changed:
What |Removed |Added
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CC| |maltsevm at gmail dot com
--- Comment #2 from Mikhail Maltsev <maltsevm at gmail dot com> ---
Reduced testcase, miscompilation, works on clang 3.5.0, but causes segfault on
trunk (r221132) and on g++ 4.8.2 20140120, x86_64-unknown-linux-gnu:
$ cat ./range-for30_r2.cc
struct str
{
str () : v(0) {}
str (const str &s) : v(s.v) {}
~str () { v = 0; }
int v;
};
str data[1];
struct vec
{
str *begin () { return data; }
str *end () { return data + 1; }
};
vec split (str &s)
{
s = str();
return vec();
}
int main ()
{
str foo;
for (str &foo : split(foo))
foo = str();
return foo.v;
}
And here is an even more minimized testcase (technically it's a different kind
of bug, "accepts invalid") - but I suppose that these bugs are related.
$ cat ./range-for30_r.cc
struct str { };
struct vec {
str *begin () {}
str *end () {}
};
vec split (str) {}
int main () {
for (str foo : split(foo))
;
}
Clang rejects this with the following error:
./range-for30_r.cc:8:24: error: use of undeclared identifier 'foo'; did you
mean 'for'?
for (str foo : split(foo))
