Remove prototypes with empty declarations (#12020)

Technically declaring a prototype with an empty declaration has been deprecated since the early days of C, but we never got a warning for it. C2x will apparently be introducing a breaking change if you are using this type of declarator, so Clang 15 has started issuing a warning with -pedantic. Although not apparently a problem for any of the compiler we build on, if feels like the right thing is to properly adhere to the C standard and use (void).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/zmalloc.h b/src/zmalloc.h
index 499cb7ec8..1ff66a635 100644
--- a/src/zmalloc.h
+++ b/src/zmalloc.h
@@ -120,7 +120,7 @@ void zmalloc_set_oom_handler(void (*oom_handler)(size_t));
 size_t zmalloc_get_rss(void);
 int zmalloc_get_allocator_info(size_t *allocated, size_t *active, size_t *resident);
 void set_jemalloc_bg_thread(int enable);
-int jemalloc_purge();
+int jemalloc_purge(void);
 size_t zmalloc_get_private_dirty(long pid);
 size_t zmalloc_get_smap_bytes_by_field(char *field, long pid);
 size_t zmalloc_get_memory_size(void);