Port malloc.h hygiene fix to LTO

* src/alloc.c (__malloc_initialize_hook):
Make it externally visible (Bug#22522).

1 files changed, 3 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 57ef4c5deab..b40c1f387cb 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -157,10 +157,12 @@ malloc_initialize_hook (void)
     }
 }
 
+/* Declare the malloc initialization hook, which runs before 'main' starts.
+   EXTERNALLY_VISIBLE works around Bug#22522.  */
 # ifndef __MALLOC_HOOK_VOLATILE
 #  define __MALLOC_HOOK_VOLATILE
 # endif
-voidfuncptr __MALLOC_HOOK_VOLATILE __malloc_initialize_hook
+voidfuncptr __MALLOC_HOOK_VOLATILE __malloc_initialize_hook EXTERNALLY_VISIBLE
   = malloc_initialize_hook;
 
 #endif