JehanneOS
/
newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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
This commit is contained in:
pfg 2018-01-21 20:27:47 +00:00 committed by Sebastian Huber
parent 1736bd3003
commit 271e856a49
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
newlib/libc/include/sys/cdefs.h
View File

@ -250,8 +250,10 @@
#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))