[Bug libstdc++/26217] New: The header is not setting default visibility

[gcc at dave dot dribin dot org]

Here is my gcc information:

% gcc -v
Using built-in specs.
Target: powerpc-apple-darwin8
Configured with: /private/var/tmp/gcc/gcc-5250.obj~12/src/configure
--disable-checking -enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.0/
--with-gxx-include-dir=/include/c++/4.0.0 --build=powerpc-apple-darwin8
--host=powerpc-apple-darwin8 --target=powerpc-apple-darwin8
Thread model: posix
gcc version 4.0.1 (Apple Computer, Inc. build 5250)

Here is the code that reproduces the error:

--- snip ---
#include <iostream>
#include <vector>
#include <stdexcept>

int main (int argc, char * const argv[]) {
    try {
        std::vector<int> intVector;
        intVector.at(0);
    }
    catch (std::out_of_range &) {
        std::cout << "Caught std::out_of_range" << std::endl;
    }

    std::cout << "Finished normally" << std::endl;
    return 0;
}
--- snip ---

Here is the error output:

% g++ -fvisibility=hidden -o catch main.cpp
% ./catch
terminate called after throwing an instance of 'std::out_of_range'
  what():  vector::_M_range_check
zsh: abort      ./catch
%

Here is the expected output:

% g++ -o catch main.cpp                    
% ./catch
Caught std::out_of_range
Finished normally
%

This problem occurs because std::out_of_range is not marked with default
visibility.  This issue is documented here (see the section on Problems with
C++ exceptions):

  http://gcc.gnu.org/wiki/Visibility

The <stdexcept> header file needs to be wrapped in:

#pragma GCC visibility push(default)
...
#pragma GCC visibility pop

Just like <exception> is.  This can be verified by modifying the program above
as:

--- snip ---
#include <iostream>
#include <vector>
#pragma GCC visibility push(default)
#include <stdexcept>
#pragma GCC visibility pop

int main (int argc, char * const argv[]) {
    try {
        std::vector<int> intVector;
        intVector.at(0);
    }
    catch (std::out_of_range &) {
        std::cout << "Caught std::out_of_range" << std::endl;
    }

    std::cout << "Finished normally" << std::endl;
    return 0;
}
--- snip ---


-- 
           Summary: The <stdexcept> header is not setting default visibility
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc at dave dot dribin dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26217