Date: Sun, 21 Jan 2018 20:27:47 +0000 (UTC) From: "Pedro F. Giffuni" <pfg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328221 - head/sys/sys Message-ID: <201801212027.w0LKRlj4024423@repo.freebsd.org>
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Author: pfg Date: Sun Jan 21 20:27:47 2018 New Revision: 328221 URL: https://svnweb.freebsd.org/changeset/base/328221 Log: Define a new __alloc_size2 attribute to complement the exiting support. At least on GCC7 calling __alloc_size(x) twice is not equivalent to calling using the attribute once with two arguments. The later is the documented use in GCC documentation so add a new alloc_size(n, x) alternative to cover for the few places where it is used: basically: calloc(3), reallocarray(3) and mallocarray(9). Submitted by: Mark Millard MFC after: 3 days Reference: http://docs.freebsd.org/cgi/mid.cgi?F227842D-6BE2-4680-82E7-07906AF61CD7 Modified: head/sys/sys/cdefs.h Modified: head/sys/sys/cdefs.h ============================================================================== --- head/sys/sys/cdefs.h Sun Jan 21 19:26:38 2018 (r328220) +++ head/sys/sys/cdefs.h Sun Jan 21 20:27:47 2018 (r328221) @@ -230,8 +230,10 @@ #endif #if __GNUC_PREREQ__(4, 3) || __has_attribute(__alloc_size__) #define __alloc_size(x) __attribute__((__alloc_size__(x))) +#define __alloc_size2(n, x) __attribute__((__alloc_size__(n, x))) #else #define __alloc_size(x) +#define __alloc_size2(n, x) #endif #if __GNUC_PREREQ__(4, 9) || __has_attribute(__alloc_align__) #define __alloc_align(x) __attribute__((__alloc_align__(x)))
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