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From: Peter Schmid <schmid@snake.iap.physik.tu-darmstadt.de> To: gcc-gnats@gcc.gnu.org Subject: c++/3048: Lookup problem (gcc 2.95 regression) Date: Mon, 04 Jun 2001 11:56:00 -0000 [thread overview] Message-ID: <200106041947.VAA15559@snake.iap.physik.tu-darmstadt.de> (raw) >Number: 3048 >Category: c++ >Synopsis: Lookup problem (gcc 2.95 regression) >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: rejects-legal >Submitter-Id: net >Arrival-Date: Mon Jun 04 11:56:00 PDT 2001 >Closed-Date: >Last-Modified: >Originator: Peter Schmid >Release: 3.0 20010604 (prerelease) >Organization: TU Darmstadt >Environment: System: Linux kiste 2.4.4 #38 Tue May 8 00:13:02 CEST 2001 i686 unknown Architecture: i686 SuSE 7.1 glibc 2.2 GNU ld version 2.11.90.0.4 (with BFD 2.11.90.0.4) host: i686-pc-linux-gnu build: i686-pc-linux-gnu target: i686-pc-linux-gnu configured with: ../gcc/configure --enable-shared --disable-nls --enable-threads=posix --enable-long-long --enable-languages=c,c++,f77,objc >Description: G++ rejects the following legal code tl.C. The compiler cannot resolve the call to f(rand), although there is a namespace std directive and the rand function is imported into this namespace. If the scope of the rand function is explicitly specified by a std:: or :: prefix, gcc 3.0 accepts the code. Please, note the "no matching function for call to f(<unknown type>)" compiler message. Gcc 2.95 has no problems compiling tl.C. >How-To-Repeat: Source code tl.C extern "C" int rand (void) throw (); namespace std { extern "C" int rand(void) throw(); template <class T> void f(T a) {} } using namespace std; int main() { f(rand); f(std::rand); f(::rand); } Compiling tl.C g++ -v tl.C Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/specs Configured with: ../gcc/configure --enable-shared --disable-nls --enable-threads=posix --enable-long-long --enable-languages=c,c++,f77,objc Thread model: posix gcc version 3.0 20010604 (prerelease) /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ tl.C -D__GNUG__=3 -D_GNU_SOURCE -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase tl.C -version -o /tmp/ccAIqTcf.s GNU CPP version 3.0 20010604 (prerelease) (cpplib) (i386 Linux/ELF) GNU C++ version 3.0 20010604 (prerelease) (i686-pc-linux-gnu) compiled by GNU C version 3.0 20010604 (prerelease). #include "..." search starts here: #include <...> search starts here: /usr/local/include/g++-v3 /usr/local/include/g++-v3/i686-pc-linux-gnu /usr/local/include/g++-v3/backward /usr/local/include /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.0/include /usr/local/i686-pc-linux-gnu/include /usr/include End of search list. tl.C: In function `int main()': tl.C:12: no matching function for call to `f(<unknown type>)' >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2001-06-04 11:56 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2001-06-04 11:56 Peter Schmid [this message] 2001-06-13 10:18 mmitchel 2001-11-22 7:05 mmitchel 2001-11-22 7:06 mmitchel
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