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libsepol/backport-libsepol-cil-introduce-intermediate-cast-to-silence-.patch
panxiaohe 7aa8ce6a3b fix secilc-fuzzer issues
2021-09-10 10:06:45 +08:00

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From 32f8ed3d6b0bba44f2f211ff630f61f6a17cf578 Mon Sep 17 00:00:00 2001
From: Nicolas Iooss <nicolas.iooss@m4x.org>
Date: Fri, 5 Feb 2021 10:45:39 +0100
Subject: [PATCH] libsepol/cil: introduce intermediate cast to silence
-Wvoid-pointer-to-enum-cast
clang 11.0.0 reports the following warning several times (when building
with "make CC=clang" from libsepol directory, in the default
configuration of the git repository):
../cil/src/cil_binary.c:1980:8: error: cast to smaller integer type
'enum cil_flavor' from 'void *' [-Werror,-Wvoid-pointer-to-enum-cast]
op = (enum cil_flavor)curr->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~
Silence this warning by casting the pointer to an integer the cast to
enum cil_flavor.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
---
libsepol/cil/src/cil_binary.c | 12 ++++++------
libsepol/cil/src/cil_policy.c | 12 ++++++------
libsepol/cil/src/cil_post.c | 2 +-
libsepol/cil/src/cil_resolve_ast.c | 2 +-
4 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/libsepol/cil/src/cil_binary.c b/libsepol/cil/src/cil_binary.c
index 7ba2098..f80d846 100644
--- a/libsepol/cil/src/cil_binary.c
+++ b/libsepol/cil/src/cil_binary.c
@@ -1977,7 +1977,7 @@ static void __cil_expr_to_string(struct cil_list *expr, enum cil_flavor flavor,
curr = expr->head;
if (curr->flavor == CIL_OP) {
- op = (enum cil_flavor)curr->data;
+ op = (enum cil_flavor)(uintptr_t)curr->data;
if (op == CIL_ALL) {
*out = cil_strdup(CIL_KEY_ALL);
@@ -2076,7 +2076,7 @@ static int __cil_cond_expr_to_sepol_expr_helper(policydb_t *pdb, struct cil_list
if (item == NULL) {
goto exit;
} else if (item->flavor == CIL_OP) {
- enum cil_flavor cil_op = (enum cil_flavor)item->data;
+ enum cil_flavor cil_op = (enum cil_flavor)(uintptr_t)item->data;
op = cil_malloc(sizeof(*op));
op->bool = 0;
@@ -2562,7 +2562,7 @@ int __cil_constrain_expr_leaf_to_sepol_expr(policydb_t *pdb, const struct cil_db
struct cil_list_item *l_item = op_item->next;
struct cil_list_item *r_item = op_item->next->next;
- enum cil_flavor l_operand = (enum cil_flavor)l_item->data;
+ enum cil_flavor l_operand = (enum cil_flavor)(uintptr_t)l_item->data;
switch (l_operand) {
case CIL_CONS_U1:
@@ -2593,7 +2593,7 @@ int __cil_constrain_expr_leaf_to_sepol_expr(policydb_t *pdb, const struct cil_db
expr->attr = CEXPR_TYPE | CEXPR_XTARGET;
break;
case CIL_CONS_L1: {
- enum cil_flavor r_operand = (enum cil_flavor)r_item->data;
+ enum cil_flavor r_operand = (enum cil_flavor)(uintptr_t)r_item->data;
if (r_operand == CIL_CONS_L2) {
expr->attr = CEXPR_L1L2;
@@ -2608,7 +2608,7 @@ int __cil_constrain_expr_leaf_to_sepol_expr(policydb_t *pdb, const struct cil_db
expr->attr = CEXPR_L2H2;
break;
case CIL_CONS_H1: {
- enum cil_flavor r_operand = (enum cil_flavor)r_item->data;
+ enum cil_flavor r_operand = (enum cil_flavor)(uintptr_t)r_item->data;
if (r_operand == CIL_CONS_L2) {
expr->attr = CEXPR_H1L2;
} else {
@@ -2672,7 +2672,7 @@ int __cil_constrain_expr_to_sepol_expr_helper(policydb_t *pdb, const struct cil_
goto exit;
}
- enum cil_flavor cil_op = (enum cil_flavor)item->data;
+ enum cil_flavor cil_op = (enum cil_flavor)(uintptr_t)item->data;
switch (cil_op) {
case CIL_NOT:
op->expr_type = CEXPR_NOT;
diff --git a/libsepol/cil/src/cil_policy.c b/libsepol/cil/src/cil_policy.c
index 74edb34..30d507f 100644
--- a/libsepol/cil/src/cil_policy.c
+++ b/libsepol/cil/src/cil_policy.c
@@ -285,7 +285,7 @@ static void cil_cond_expr_to_policy(FILE *out, struct cil_list *expr, int first)
struct cil_list_item *i1 = expr->head;
if (i1->flavor == CIL_OP) {
- enum cil_flavor op = (enum cil_flavor)i1->data;
+ enum cil_flavor op = (enum cil_flavor)(uintptr_t)i1->data;
fprintf(out, "(");
switch (op) {
case CIL_NOT:
@@ -385,7 +385,7 @@ static size_t __cil_cons_leaf_operand_len(struct cil_db *db, struct cil_list_ite
static size_t __cil_cons_leaf_op_len(struct cil_list_item *op)
{
- enum cil_flavor flavor = (enum cil_flavor)op->data;
+ enum cil_flavor flavor = (enum cil_flavor)(uintptr_t)op->data;
size_t len;
switch (flavor) {
@@ -420,7 +420,7 @@ static size_t cil_cons_expr_len(struct cil_db *db, struct cil_list *cons_expr)
i1 = cons_expr->head;
- op = (enum cil_flavor)i1->data;
+ op = (enum cil_flavor)(uintptr_t)i1->data;
switch (op) {
case CIL_NOT:
len = 6; /* "(not )" */
@@ -472,7 +472,7 @@ static char *__cil_cons_leaf_operand_to_string(struct cil_db *db, struct cil_lis
size_t o_len;
if (flavor == CIL_CONS_OPERAND) {
- enum cil_flavor o_flavor = (enum cil_flavor)operand->data;
+ enum cil_flavor o_flavor = (enum cil_flavor)(uintptr_t)operand->data;
switch (o_flavor) {
case CIL_CONS_U1:
o_str = "u1";
@@ -555,7 +555,7 @@ static char *__cil_cons_leaf_operand_to_string(struct cil_db *db, struct cil_lis
static char *__cil_cons_leaf_op_to_string(struct cil_list_item *op, char *new)
{
- enum cil_flavor flavor = (enum cil_flavor)op->data;
+ enum cil_flavor flavor = (enum cil_flavor)(uintptr_t)op->data;
const char *op_str;
size_t len;
@@ -599,7 +599,7 @@ static char *__cil_cons_expr_to_string(struct cil_db *db, struct cil_list *cons_
i1 = cons_expr->head;
- op = (enum cil_flavor)i1->data;
+ op = (enum cil_flavor)(uintptr_t)i1->data;
switch (op) {
case CIL_NOT:
*new++ = '(';
diff --git a/libsepol/cil/src/cil_post.c b/libsepol/cil/src/cil_post.c
index 37a4441..a55df1e 100644
--- a/libsepol/cil/src/cil_post.c
+++ b/libsepol/cil/src/cil_post.c
@@ -1301,7 +1301,7 @@ static int __cil_expr_to_bitmap(struct cil_list *expr, ebitmap_t *out, int max,
flavor = expr->flavor;
if (curr->flavor == CIL_OP) {
- enum cil_flavor op = (enum cil_flavor)curr->data;
+ enum cil_flavor op = (enum cil_flavor)(uintptr_t)curr->data;
if (op == CIL_ALL) {
ebitmap_init(&b1); /* all zeros */
diff --git a/libsepol/cil/src/cil_resolve_ast.c b/libsepol/cil/src/cil_resolve_ast.c
index 9300cd2..208bc01 100644
--- a/libsepol/cil/src/cil_resolve_ast.c
+++ b/libsepol/cil/src/cil_resolve_ast.c
@@ -3355,7 +3355,7 @@ static int __cil_evaluate_tunable_expr(struct cil_list_item *curr)
return CIL_FALSE;
} else if (curr->flavor == CIL_OP) {
uint16_t v1, v2;
- enum cil_flavor op_flavor = (enum cil_flavor)curr->data;
+ enum cil_flavor op_flavor = (enum cil_flavor)(uintptr_t)curr->data;
v1 = __cil_evaluate_tunable_expr_helper(curr->next);
--
1.8.3.1
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