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* [Bug c++/17669] New: Scope mismatch
@ 2004-09-25 15:59 trick at icculus dot org
2004-09-25 16:01 ` [Bug c++/17669] " trick at icculus dot org
2004-09-25 16:27 ` [Bug libstdc++/17669] " pinskia at gcc dot gnu dot org
0 siblings, 2 replies; 3+ messages in thread
From: trick at icculus dot org @ 2004-09-25 15:59 UTC (permalink / raw)
To: gcc-bugs
The following little "program", which used to work fine in gcc 3.3, results in a
scope error when compiled with gcc 3.4. Replacing "char_traits" in the code
below with "std::char_traits" makes it compile without error. So, it seems g++
doesn't use the "using namespace std" for char_traits, somehow.
I tried to just include the relevant parts of what showed up in the preprocessed
file, but then the problem went away, so this is unfortunately the most minimal
test I was able to get. (ext/pod_char_traits.h is from libstdc++)
--- 8< ---
$ cat test.cpp
#include <ext/pod_char_traits.h>
using namespace std;
using namespace __gnu_cxx;
typedef character<unsigned short, int> WCHAR;
typedef basic_string<WCHAR, char_traits<WCHAR>, allocator<WCHAR> > WSTRING;
$ g++ -c test.cpp
test.cpp:8: error: `char_traits' was not declared in this scope
test.cpp:8: error: template argument 2 is invalid
test.cpp:8: error: expected unqualified-id before ',' token
test.cpp:8: error: expected init-declarator before '>' token
test.cpp:8: error: expected `,' or `;' before '>' token
$ diff -u test.cpp test2.cpp
--- test.cpp 2004-09-25 17:44:56.883215224 +0200
+++ test2.cpp 2004-09-25 17:49:47.230075792 +0200
@@ -5,4 +5,4 @@
typedef character<unsigned short, int> WCHAR;
-typedef basic_string<WCHAR, char_traits<WCHAR>, allocator<WCHAR> > WSTRING;
+typedef basic_string<WCHAR, std::char_traits<WCHAR>, allocator<WCHAR> > WSTRING;
$ g++ -c test2.cpp
$
$ gcc -v
Reading specs from /usr/lib/gcc/i686-pc-linux-gnu/3.4.2/specs
Configured with: /var/tmp/portage/gcc-3.4.2-r1/work/gcc-3.4.2/configure
--enable-version-specific-runtime-libs --prefix=/usr
--bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.4
--includedir=/usr/lib/gcc/i686-pc-linux-gnu/3.4.2/include
--datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.4
--mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.4/man
--infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.4/info
--with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/3.4.2/include/g++-v3
--host=i686-pc-linux-gnu --enable-nls --without-included-gettext
--enable-__cxa_atexit --enable-clocale=gnu --enable-shared --with-system-zlib
--disable-checking --disable-werror --disable-libunwind-exceptions --with-gnu-ld
--enable-threads=posix --disable-multilib --enable-languages=c,c++,objc,java
Thread model: posix
gcc version 3.4.2 (Gentoo Linux 3.4.2-r1, ssp-3.4.1-1, pie-8.7.6.5)
--- 8< ---
I'll attach the preprocessed file of test.cpp.
- Gerry
--
Summary: Scope mismatch
Product: gcc
Version: 3.4.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: trick at icculus dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17669
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/17669] Scope mismatch
2004-09-25 15:59 [Bug c++/17669] New: Scope mismatch trick at icculus dot org
@ 2004-09-25 16:01 ` trick at icculus dot org
2004-09-25 16:27 ` [Bug libstdc++/17669] " pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: trick at icculus dot org @ 2004-09-25 16:01 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From trick at icculus dot org 2004-09-25 16:01 -------
Created an attachment (id=7218)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7218&action=view)
test.ii
Proprocessed file (obtained from "g++ --save-temps -c test.cpp")
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17669
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug libstdc++/17669] Scope mismatch
2004-09-25 15:59 [Bug c++/17669] New: Scope mismatch trick at icculus dot org
2004-09-25 16:01 ` [Bug c++/17669] " trick at icculus dot org
@ 2004-09-25 16:27 ` pinskia at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-09-25 16:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-09-25 16:27 -------
char_traits is defined in both namespaces std and __gnu_cxx, there is another bug already about the
error message.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c++ |libstdc++
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17669
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-09-25 15:59 [Bug c++/17669] New: Scope mismatch trick at icculus dot org
2004-09-25 16:01 ` [Bug c++/17669] " trick at icculus dot org
2004-09-25 16:27 ` [Bug libstdc++/17669] " pinskia at gcc dot gnu dot org
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