[PATCH] boost: module context affected by GCC bug 64735

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[PATCH] boost: module context affected by GCC bug 64735

Jörg Krause-2
Building boosts module context is affected by GCC bug 64735 [1]:

```
./boost/context/execution_context_v2.hpp:298:31: error: 'exception_ptr' is not a member of 'std'
     auto p = std::make_tuple( std::exception_ptr{}, std::move( data) );
```

This is because `exception_ptr` from libstdc++ is not available for
architectures not supporting always lock-free atomic ints.

Note, that this bug is fixed in GCC 7.

Fixes:
http://autobuild.buildroot.net/results/f4e/f4e8a3727f19f7df4a1c45efe3603422fafd4af5/

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735

Signed-off-by: Jörg Krause <[hidden email]>
---
 package/boost/Config.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/boost/Config.in b/package/boost/Config.in
index f0a2385706..50d0ff8e01 100644
--- a/package/boost/Config.in
+++ b/package/boost/Config.in
@@ -67,6 +67,7 @@ config BR2_PACKAGE_BOOST_CONTEXT
  bool "boost-context"
  depends on ((BR2_arm || BR2_armeb) && BR2_ARM_CPU_HAS_ARM) || \
  BR2_i386 || BR2_mips || BR2_mipsel || BR2_powerpc || BR2_x86_64
+ depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735
 
 config BR2_PACKAGE_BOOST_COROUTINE
  bool "boost-coroutine"
--
2.13.1

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Re: [PATCH] boost: module context affected by GCC bug 64735

Thomas Petazzoni-2
Hello,

On Thu, 15 Jun 2017 11:40:00 +0200, Jörg Krause wrote:

> Building boosts module context is affected by GCC bug 64735 [1]:
>
> ```
> ./boost/context/execution_context_v2.hpp:298:31: error: 'exception_ptr' is not a member of 'std'
>      auto p = std::make_tuple( std::exception_ptr{}, std::move( data) );
> ```
>
> This is because `exception_ptr` from libstdc++ is not available for
> architectures not supporting always lock-free atomic ints.
>
> Note, that this bug is fixed in GCC 7.
>
> Fixes:
> http://autobuild.buildroot.net/results/f4e/f4e8a3727f19f7df4a1c45efe3603422fafd4af5/
>
> [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735
>
> Signed-off-by: Jörg Krause <[hidden email]>
> ---
>  package/boost/Config.in | 1 +
>  1 file changed, 1 insertion(+)

Applied to master, thanks.

Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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