See following code snippet; when the MY_THROW macro is changed to
do { throw ::my_error( MeSSaGe ); } while( 1 )
then I get the expected result, i.e. invocation of the executable prints "error
foo" and returns 1 to the shell... This is on an i7 iMac with Mac OS X 10.6.2
with 64bit Kernel and current GCC 4.4.3 from MacPorts.
co...@tigger:/tmp> cat debug.cc
#include <sstream>
#include <iostream>
#include <stdexcept>
struct my_error
: public std::runtime_error
{
explicit
my_error( const std::string & message )
: std::runtime_error( message )
{ }
};
#define MY_THROW( MeSSaGe ) \
do { std::ostringstream oss; oss << MeSSaGe; throw ::my_error( oss.str() );
} while( 1 )
template< typename T >
bool throwing( const T )
{
MY_THROW( "foo" );
}
int main()
{
try {
throwing( 42.0 );
}
catch ( const ::my_error & e ) {
std::cerr << "error " << e.what() << "\n";
return 1;
}
return 0;
}
co...@tigger:/tmp> g++-mp-4.4 -Iinclude -std=c++0x -pedantic -Wall -Wextra -O3
-m64 -march=native debug.cc -o debug
co...@tigger:/tmp> ./debug
Abort trap
co...@tigger:/tmp> g++-mp-4.4 --version
g++-mp-4.4 (GCC) 4.4.3
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
co...@tigger:/tmp> g++-mp-4.4 -v
Using built-in specs.
Target: x86_64-apple-darwin10
Configured with: ../gcc-4.4.3/configure --prefix=/opt/local
--build=x86_64-apple-darwin10
--enable-languages=c,c++,objc,obj-c++,java,fortran
--libdir=/opt/local/lib/gcc44 --includedir=/opt/local/include/gcc44
--infodir=/opt/local/share/info --mandir=/opt/local/share/man
--with-local-prefix=/opt/local --with-system-zlib --disable-nls
--program-suffix=-mp-4.4 --with-gxx-include-dir=/opt/local/include/gcc44/c++/
--with-gmp=/opt/local --with-mpfr=/opt/local --enable-stage1-checking
Thread model: posix
gcc version 4.4.3 (GCC)
co...@tigger:/tmp>
--
Summary: exception ignores catch-clause when std::ostringstream
helps in throwing
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gcc at cohi dot at
GCC host triplet: 86_64-apple-darwin10
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43493
