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* [Bug c++/67997] New: GCC 5.2.0 fails to link std::cout overloaded functions when -std=c++11 option is used
@ 2015-10-16 18:58 all4sanjay at yahoo dot com
2015-10-16 20:22 ` [Bug c++/67997] " glisse at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: all4sanjay at yahoo dot com @ 2015-10-16 18:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67997
Bug ID: 67997
Summary: GCC 5.2.0 fails to link std::cout overloaded functions
when -std=c++11 option is used
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: all4sanjay at yahoo dot com
Target Milestone: ---
The sample program below works fine with GCC 4.9.0 and prior versions when used
with -std=c++11 option, but it fails with GCC 5.2.0. In fact it also fails with
Clang 3.7 and Visual Studio 2015 compilers if -std=c++11 option is used. Please
see why it's failing only with 5.2.0 version.
#include <iostream>
#include <sstream>
int main ()
{
std::stringstream str2;
str2 << "std::stringstream log message";
std::cout << str2.str() << std::endl; //This line works
std::cout << str2 << std::endl; //This line fails if -std=c++11
option is used
return 0;
}
Command Line options to compile the program
Fails: $/gcc/5.2.0/bin/g++ -std=c++11 -o test test.cpp
Works: $/gcc/5.2.0/bin/g++ -o test test.cpp
Works: $/gcc/4.7.2/bin/g++ -std=c++11 -o test test.cpp
Compiler Error:
error: no match for operator<< (operand types are std::ostringstream {aka
std::__cxx11::basic_ostringstream<char>}
Thanks
Sanjay
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/67997] GCC 5.2.0 fails to link std::cout overloaded functions when -std=c++11 option is used
2015-10-16 18:58 [Bug c++/67997] New: GCC 5.2.0 fails to link std::cout overloaded functions when -std=c++11 option is used all4sanjay at yahoo dot com
@ 2015-10-16 20:22 ` glisse at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: glisse at gcc dot gnu.org @ 2015-10-16 20:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67997
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Well, yes, the standard changed, streams now have an explicit conversion to
bool instead of a hackish conversion to void*. What do you mean by "work fine",
is your goal really to print some random pointer?
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-10-16 18:58 [Bug c++/67997] New: GCC 5.2.0 fails to link std::cout overloaded functions when -std=c++11 option is used all4sanjay at yahoo dot com
2015-10-16 20:22 ` [Bug c++/67997] " glisse at gcc dot gnu.org
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