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Subject:	Re: Updated: gcc-7.3.0-2 (x86/x86_64)
To:	cygwin AT cygwin DOT com
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From: JonY <10walls AT gmail DOT com>
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Subject: Re: Updated: gcc-7.3.0-2 (x86/x86_64)
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On 05/29/2018 05:32 PM, Alberto Escrig Vidal wrote:
>=20
> Thanks so much Jon!
>=20
>=20
> I have noticed a couple of issues with g++-7.
>=20
>=20
> 1)
>=20
>=20
> #include <string>
> #include <iostream>
> #include <sstream>
>=20
> int main()
> {
> std::string Str;
> std::stringstream ss("hello");
> std::getline(ss,Str);
> std::cout << Str;
>=20
> return 0;
> }
>=20
> Compiling the above program with:
>=20
> g++ -g -std=3Dc++17 foo.cpp
>=20
> Compiles just fine, but aborts when running it.
>=20
> Running it with gdb:
>=20
> Program received signal SIGABRT, Aborted.
> 0x6326126a in cygstdc++-6!_ZNSs7reserveEj () from /usr/bin/cygstdc++-6.dll
>=20
> The program works fine if compiled with -std=3Dc++14.
>=20

$ c++filt _ZNSs7reserveEj
std::basic_string<char, std::char_traits<char>, std::allocator<char>
>::reserve(unsigned int)

Does -static change anything?

> 2)
>=20
> This program fails to compile (it also failed with g++-6).
>=20
> #include <shared_mutex>
>=20
> int main() {}
>=20

I'm guessing Cygwin does not support the functionality declared in the
headers yet.



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