Make const ptr assign as function call in clang

- This can act as memory barrier in clang to avoid
  read before assign of a const ptr

Signed-off-by: LoveSy <shana@zju.edu.cn>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 199975191..2d3cc8a61 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -504,7 +504,7 @@ extern struct globals_misc *BB_GLOBAL_CONST ash_ptr_to_globals_misc;
 #define random_gen  (G_misc.random_gen )
 #define backgndpid  (G_misc.backgndpid )
 #define INIT_G_misc() do { \
-        ASSIGN_CONST_PTR(ash_ptr_to_globals_misc, xzalloc(sizeof(G_misc))); \
+        XZALLOC_CONST_PTR(&ash_ptr_to_globals_misc, sizeof(G_misc)); \
         savestatus = -1; \
         curdir = nullstr; \
         physdir = nullstr; \
@@ -1582,7 +1582,7 @@ extern struct globals_memstack *BB_GLOBAL_CONST ash_ptr_to_globals_memstack;
 #define g_stacknleft (G_memstack.g_stacknleft)
 #define stackbase    (G_memstack.stackbase   )
 #define INIT_G_memstack() do { \
-        ASSIGN_CONST_PTR(ash_ptr_to_globals_memstack, xzalloc(sizeof(G_memstack))); \
+        XZALLOC_CONST_PTR(&ash_ptr_to_globals_memstack, sizeof(G_memstack)); \
         g_stackp = &stackbase; \
         g_stacknxt = stackbase.space; \
         g_stacknleft = MINSIZE; \
@@ -2213,7 +2213,7 @@ extern struct globals_var *BB_GLOBAL_CONST ash_ptr_to_globals_var;
 #endif
 #define INIT_G_var() do { \
         unsigned i; \
-        ASSIGN_CONST_PTR(ash_ptr_to_globals_var, xzalloc(sizeof(G_var))); \
+        XZALLOC_CONST_PTR(&ash_ptr_to_globals_var, sizeof(G_var)); \
         for (i = 0; i < ARRAY_SIZE(varinit_data); i++) { \
                 varinit[i].flags    = varinit_data[i].flags; \
                 varinit[i].var_text = varinit_data[i].var_text; \