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Is this a bug?
- From: Ritzert at t-online dot de
- To: gcc-bugs at gcc dot gnu dot org
- Cc: austern at apple dot com
- Date: Fri, 30 Aug 2002 11:39:29 +0200 (CEST)
- Subject: Is this a bug?
Hi all,
Since 2002-08-26 I'm unable to compile STLPort with gcc HEAD. I have
stripped down the STLPort code to this small testcase:
# cat x.cpp
template <class _Tp>
inline const _Tp& max(const _Tp& __a, const _Tp& __b)
{ return __a < __b ? __b : __a; }
void append()
{
const unsigned __old_size = 3;
int __n = 7;
max(__old_size, static_cast<unsigned>(__n));
}
# gcc -c x.cpp
x.cpp: In function `void append()':
x.cpp:9: error: non-lvalue in unary `&'
The patch causing this seems to be
2002-08-24 Matt Austern <austern@apple.com>
* tree.c (lvalue_p_1): Add argument for whether casts of lvalues
are allowable.
(real_lvalue_p): Update caller.
(lvalue_p): Ditto.
(non_cast_lvalue_or_else): New.
* tree.h: Declare it.
* typeck.c (build_unary_op): Use non_cast_lvalue_or_else.
The ChangeLog to the previous successful build is rather small with
this being the only patch that looks suspicious to me.
If this is considered a bug, just tell me and I'll file a bug report
for it. (Or fix it before I get the chance to do so ;-) ).
Regards,
Michael