__attribute__((malloc)) with arguments

[bradking]

Bugzilla Link	52265
Version	trunk
OS	All
CC	@zygoloid

Extended Description

GCC 11.x added support for arguments to attribute (malloc):

• https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;f=gcc/doc/extend.texi;h=dce6c58db87ebf7f4477bd3126228e73e4eeee97#patch6

For example:

$ cat test.c
typedef struct my_s {} my;
void myclose (my*);
attribute ((malloc, malloc (myclose))) my* myopen(void);

$ gcc-11 -c test.c
(works)

$ clang-13 -c test.c
test.c:3:25: error: 'malloc' attribute takes no arguments
attribute ((malloc, malloc (myclose))) my* myopen(void);
^