Hi,
For function without arguments, gimplify_cilk_spawn checks
*arg_array == NULL_TREE
But arg_array is a TREE vector of zero elements. This patch updates
gimplify_cilk_spawn to properly handle function without arguments.
Tested on Linux/x86-64 with GCC bootstraped using -fsanitize=address.
OK to install?
Thanks.
H.J.
----
2013-11-28 H.J. Lu <hongjiu...@intel.com>
PR c/59309
* cilk.c (gimplify_cilk_spawn): Properly handle function without
arguments.
diff --git a/gcc/c-family/cilk.c b/gcc/c-family/cilk.c
index c85b5f2..99d9c7e 100644
--- a/gcc/c-family/cilk.c
+++ b/gcc/c-family/cilk.c
@@ -757,7 +757,10 @@ gimplify_cilk_spawn (tree *spawn_p, gimple_seq *before
ATTRIBUTE_UNUSED,
/* This should give the number of parameters. */
total_args = list_length (new_args);
- arg_array = XNEWVEC (tree, total_args);
+ if (total_args)
+ arg_array = XNEWVEC (tree, total_args);
+ else
+ arg_array = NULL;
ii_args = new_args;
for (ii = 0; ii < total_args; ii++)
@@ -771,7 +774,7 @@ gimplify_cilk_spawn (tree *spawn_p, gimple_seq *before
ATTRIBUTE_UNUSED,
call1 = cilk_call_setjmp (cfun->cilk_frame_decl);
- if (*arg_array == NULL_TREE)
+ if (arg_array == NULL || *arg_array == NULL_TREE)
call2 = build_call_expr (function, 0);
else
call2 = build_call_expr_loc_array (EXPR_LOCATION (*spawn_p), function,
