On Mon, Feb 05, 2007 at 10:54:20AM -0800, Randy Dunlap wrote:
> The skbuff.[hc] difference is in *getfrag vs. getfrag.
> The mpage.[hc] difference is in *get_block vs. getblock.
>
> Questions:
> 1. Is the warning valid?
I don't think so.
> 2. Isn't the '*' unnecessary?
It is valid in C without '*'. Sparse already know the function
is going to degenerated into function pointers. It wrongly inherent
the signedness. You get a signed pointer.
Can you please try this patch?
Chris
Index: sparse/symbol.h
===================================================================
--- sparse.orig/symbol.h 2007-02-04 23:46:07.000000000 -0800
+++ sparse/symbol.h 2007-02-05 12:18:30.000000000 -0800
@@ -191,6 +191,7 @@ struct symbol {
#define MOD_SIZE (MOD_CHAR | MOD_SHORT | MOD_LONG | MOD_LONGLONG)
#define MOD_IGNORE (MOD_TOPLEVEL | MOD_STORAGE | MOD_ADDRESSABLE | \
MOD_ASSIGNED | MOD_USERTYPE | MOD_FORCE | MOD_ACCESSED | MOD_EXPLICITLY_SIGNED)
+#define MOD_PTRINHERIT (MOD_VOLATILE | MOD_CONST | MOD_NODEREF | MOD_STORAGE)
/* Current parsing/evaluation function */
Index: sparse/evaluate.c
===================================================================
--- sparse.orig/evaluate.c 2007-02-04 00:47:46.000000000 -0800
+++ sparse/evaluate.c 2007-02-05 12:20:08.000000000 -0800
@@ -1282,7 +1282,7 @@ static void examine_fn_arguments(struct
else
ptr->ctype.base_type = arg;
ptr->ctype.as |= s->ctype.as;
- ptr->ctype.modifiers |= s->ctype.modifiers;
+ ptr->ctype.modifiers |= s->ctype.modifiers & MOD_PTRINHERIT;
s->ctype.base_type = ptr;
s->ctype.as = 0;
@@ -1313,8 +1313,6 @@ static struct symbol *convert_to_as_mod(
return sym;
}
-#define MOD_PTRINHERIT (MOD_VOLATILE | MOD_CONST | MOD_NODEREF | MOD_STORAGE)
-
static struct symbol *create_pointer(struct expression *expr, struct symbol *sym, int degenerate)
{
struct symbol *node = alloc_symbol(expr->pos, SYM_NODE);
-
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