On Sun, Feb 11, 2018 at 8:01 AM, Antoine Brodin <anto...@freebsd.org> wrote: > On Wed, Feb 7, 2018 at 4:06 PM, Hans Petter Selasky > <hsela...@freebsd.org> wrote: >> Author: hselasky >> Date: Wed Feb 7 15:06:54 2018 >> New Revision: 328973 >> URL: https://svnweb.freebsd.org/changeset/base/328973 >> >> Log: >> MFC r328237: >> Use the __alloc_size2 attribute where relevant. >> >> This follows the documented use in GCC. It is basically only relevant for >> calloc(3), reallocarray(3) and mallocarray(9). >> >> NOTE: Without this change clang 5.0.1 can produce incorrect optimisation >> code for static processing of data using the allocated object. For example >> this has been seen compiling the mlx4 core module, which allocates a >> fixed size array which is then sorted by a fixed order loop. The >> optimised result, -O2, is incorrect unless this patch is in place. >> >> Suggested by: Mark Millard >> Reference: >> https://docs.freebsd.org/cgi/mid.cgi?9DE674C6-EAA3-4E8A-906F-446E74D82FC4 >> >> Modified: >> stable/11/include/stdlib.h >> stable/11/sys/sys/malloc.h >> Directory Properties: >> stable/11/ (props changed) > > Hi, > > Please revert this change. Lots of ports that used to build fine on > stable/11 are now failing. > /usr/include/stdlib.h:93:7: error: expected function body after > function declarator > __alloc_size2(1, 2);
Something like this may be needed on stable/11: Index: 11/sys/sys/cdefs.h =================================================================== --- 11/sys/sys/cdefs.h (revision 329121) +++ 11/sys/sys/cdefs.h (working copy) @@ -213,6 +213,7 @@ #define __aligned(x) #define __alloc_align(x) #define __alloc_size(x) +#define __alloc_size2(n, x) #define __section(x) #define __weak_symbol #else Antoine _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
