Add support for the attribute 'unused' (and its double underscore
variant. There is no semantic attached to it but it's now at least
parsed and added to the modifiers.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
parse.c | 2 ++
show-parse.c | 1 +
symbol.h | 6 +++---
3 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/parse.c b/parse.c
index c1573b396840..281140bf2ee4 100644
--- a/parse.c
+++ b/parse.c
@@ -571,6 +571,8 @@ static struct init_keyword {
{ "__noderef__",NS_KEYWORD, MOD_NODEREF, .op = &attr_mod_op },
{ "safe", NS_KEYWORD, MOD_SAFE, .op = &attr_mod_op },
{ "__safe__", NS_KEYWORD, MOD_SAFE, .op = &attr_mod_op },
+ { "unused", NS_KEYWORD, MOD_UNUSED, .op = &attr_mod_op },
+ { "__unused__", NS_KEYWORD, MOD_UNUSED, .op = &attr_mod_op },
{ "force", NS_KEYWORD, .op = &attr_force_op },
{ "__force__", NS_KEYWORD, .op = &attr_force_op },
{ "bitwise", NS_KEYWORD, MOD_BITWISE, .op = &attr_bitwise_op },
diff --git a/show-parse.c b/show-parse.c
index 0c4b9ec27645..f4c7de30da2c 100644
--- a/show-parse.c
+++ b/show-parse.c
@@ -140,6 +140,7 @@ const char *modifier_string(unsigned long mod)
{MOD_TLS, "[tls]"},
{MOD_TOPLEVEL, "[toplevel]"},
{MOD_UNSIGNED, "[unsigned]"},
+ {MOD_UNUSED, "[unused]"},
{MOD_USERTYPE, "[usertype]"},
};
diff --git a/symbol.h b/symbol.h
index 9ba764b596da..b594eb36ced0 100644
--- a/symbol.h
+++ b/symbol.h
@@ -235,8 +235,8 @@ struct symbol {
// MOD UNUSED 0x00080000
// MOD UNUSED 0x00100000
// MOD UNUSED 0x00200000
- // MOD UNUSED 0x00400000
+#define MOD_UNUSED 0x00400000
#define MOD_SAFE 0x00800000 // non-null/non-trapping pointer
#define MOD_PURE 0x01000000
#define MOD_BITWISE 0x02000000
@@ -252,7 +252,7 @@ struct symbol {
#define MOD_ESIGNED (MOD_SIGNED | MOD_EXPLICITLY_SIGNED)
#define MOD_SIGNEDNESS (MOD_SIGNED | MOD_UNSIGNED | MOD_EXPLICITLY_SIGNED)
#define MOD_SPECIFIER MOD_SIGNEDNESS
-#define MOD_IGNORE (MOD_STORAGE | MOD_ACCESS | MOD_USERTYPE | MOD_EXPLICITLY_SIGNED | MOD_EXT_VISIBLE)
+#define MOD_IGNORE (MOD_STORAGE | MOD_ACCESS | MOD_USERTYPE | MOD_EXPLICITLY_SIGNED | MOD_EXT_VISIBLE | MOD_UNUSED)
#define MOD_QUALIFIER (MOD_CONST | MOD_VOLATILE | MOD_RESTRICT)
#define MOD_PTRINHERIT (MOD_QUALIFIER | MOD_ATOMIC | MOD_NODEREF | MOD_NORETURN | MOD_NOCAST)
/* modifiers preserved by typeof() operator */
@@ -262,7 +262,7 @@ struct symbol {
/* like cvr-qualifiers but 'reversed' (OK: source <= target) */
#define MOD_REV_QUAL (MOD_PURE|MOD_NORETURN)
/* do not warn when these are duplicated */
-#define MOD_DUP_OK 0
+#define MOD_DUP_OK (MOD_UNUSED)
/* Current parsing/evaluation function */
--
2.26.2
