Heloo and Happy New Year!
On 24.11.2013 07:54, David Chisnall wrote:
On 23 Nov 2013, at 22:11, Pedro Giffuni <p...@freebsd.org> wrote:
I have particular interest in -fwritable-strings
and the block support, mostly with the idea of making our gcc
somewhat more compatible to clang.
I would absolutely love to see our GCC have blocks support. It would be very
nice to be able to use blocks in libc.
It took me a while and I still have to do more review, but I finally
have a patch for blocks support in gcc
http://people.freebsd.org/~pfg/patches/gcc/gcc-blocks.patch
(this only applies against -current for now)
I have been able to build an example test from wikipedia and
devel/libdispatch, with a small caveat: You have to #define __block or
else you get this message:
error: '__block' undeclared (first use in this function)
The behaviour is consistent with llvm-gcc though, as explained here:
https://bugs.launchpad.net/ubuntu/+source/llvm-gcc-4.2/+bug/483679
" looking at the LLVM/Clang documentation
(http://clang.llvm.org/doxygen/InitPreprocessor_8cpp-source.html
<http://clang.llvm.org/doxygen/InitPreprocessor_8cpp-source.html>) shows
that __block is not actually a keyword, but a macro that is defined to
be __attribute__((__blocks__(byref)))."
Not sure what to do about it, I had added a #define for it in Block.h
since you have to link with -lBlocksRuntime anyways, but not everything
includes Block.h (surely not the libdispatch tests).
Anyways, I will be revising the patch some more and will commit it
somewhen next week.
Enjoy,
Pedro.
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