g++-4.0s give the following incorrect error on valid code (it should be
accepted, I think):
gcc4rejectvalid.cc:25: error: 'persistent_object_manager' has not been declared
Run command
g++-4.0 -v --save-temps -c gcc4rejectvalid.cc -o gcc4rejectvalid.o
Output with version specs:
Using built-in specs.
Configured with: ../configure --prefix=/sw --prefix=/sw/lib/gcc4 --enable-
languages=c,c++,objc,f95,java --infodir=/share/info --with-gmp=/sw
--with-as=/sw/lib/odcctools/
bin/as --with-ld=/sw/lib/odcctools/bin/ld --with-included-gettext
--host=powerpc-apple-darwin
Thread model: posix
gcc version 4.0.0 20050130 (experimental)
/sw/lib/gcc4/libexec/gcc/powerpc-apple-darwin/4.0.0/cc1plus -E -quiet -v
-D__DYNAMIC__
-D__APPLE_CC__=1 gcc4rejectvalid.cc -fPIC -fpch-preprocess -o gcc4rejectvalid.ii
ignoring nonexistent directory
"/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin/4.0.0/../../../../powerpc-
apple-darwin/include"
#include "..." search starts here:
#include <...> search starts here:
/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin/4.0.0/../../../../include/c++/4.0.0
/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin/4.0.0/../../../../include/c++/4.0.0/powerpc-apple-
darwin
/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin/4.0.0/../../../../include/c++/4.0.0/backward
/usr/local/include
/sw/lib/gcc4/include
/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin/4.0.0/include
/usr/include
/System/Library/Frameworks
/Library/Frameworks
End of search list.
/sw/lib/gcc4/libexec/gcc/powerpc-apple-darwin/4.0.0/cc1plus -fpreprocessed
gcc4rejectvalid.ii
-fPIC -quiet -dumpbase gcc4rejectvalid.cc -auxbase-strip gcc4rejectvalid.o
-version -o
gcc4rejectvalid.s
GNU C++ version 4.0.0 20050130 (experimental) (powerpc-apple-darwin)
compiled by GNU C version 3.3 20030304 (Apple Computer, Inc. build
1640).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
gcc4rejectvalid.cc:25: error: 'persistent_object_manager' has not been declared
------------- gcc4rejectvalid.ii ---------------
# 1 "gcc4rejectvalid.cc"
# 1 "<built-in>"
# 1 "<command line>"
# 1 "gcc4rejectvalid.cc"
namespace util
{
class persistent_object_manager;
namespace memory
{
class pointer_manipulator
{
friend class persistent_object_manager;
};
}
}
namespace util
{
using namespace memory;
class persistent_object_manager
{
static const int foo;
};
}
namespace util {
const int
persistent_object_manager::foo = 666;
}
---------- end-of-file ------------
Remarks:
The above code is accepted by gcc-3.3 and 3.4.
The example above was created from a variation of the code reported in PR
19948, and may be closely
related.
The error goes away when:
1) the first friend declaration is class pointer_manipulator is removed.
2) add a using util::persistent_object_manager; in namespace memory before
defining class
pointer_manipulator.
Workaround:
Use 2). (This workaround also applies to PR 19948.)
--
Summary: incorrect error: class has not been declared
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: fang at csl dot cornell dot edu
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20234
