git: a64a3b798825 - main - libc/tests/stdlib/dynthr_mod/dynthr_mod.c: mark dummy as used

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=a64a3b798825bc176ae052fc3ead88566b60ba7d

commit a64a3b798825bc176ae052fc3ead88566b60ba7d
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2021-11-28 03:25:28 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2021-11-29 15:39:51 +0000

    libc/tests/stdlib/dynthr_mod/dynthr_mod.c: mark dummy as used
    
    It receives the malloc() result, and we do not want the malloc() call
    to be optimized out, which is allowed for hosted compiler.  Use dummy
    for actual write though.
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
---
 lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c b/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c
index 4f5622f47a81..c19a1a54a8b6 100644
--- a/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c
+++ b/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c
@@ -51,6 +51,7 @@ mod_thread(void *ptr __unused)
 	char *volatile dummy;
 
 	dummy = malloc(500);
+	*dummy = 'a';
 	return (NULL);
 }