https://developers.redhat.com/blog/2017/03/10/wimplicit-fallthrough-in-gcc-7/
Fixes the following warnings by annotating with a /* FALLTHRU */ comment.
Unfortunately, the __attribute__ ((fallthrough)); approach does not appear
to work with older compilers.
../cil/src/cil_parser.c: In function ‘cil_parser’:
../cil/src/cil_parser.c:253:14: warning: this statement may fall through
[-Wimplicit-fallthrough=]
tok.value = tok.value+1;
~~~~~~~~~~^~~~~~~~~~~~~
../cil/src/cil_parser.c:254:3: note: here
case SYMBOL:
^~~~
../cil/src/cil_parser.c:275:7: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (tok.type != END_OF_FILE) {
^
../cil/src/cil_parser.c:279:3: note: here
case END_OF_FILE:
^~~~
../cil/src/cil_post.c: In function ‘cil_post_fc_fill_data’:
../cil/src/cil_post.c:104:5: warning: this statement may fall through
[-Wimplicit-fallthrough=]
c++;
~^~
../cil/src/cil_post.c:105:3: note: here
default:
^~~~~~~
regex.c: In function ‘regex_format_error’:
regex.c:541:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:542:2: note: here
case 3:
^~~~
regex.c:543:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:544:2: note: here
case 2:
^~~~
regex.c:545:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:546:2: note: here
case 1:
^~~~
regex.c: In function ‘regex_format_error’:
regex.c:541:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:542:2: note: here
case 3:
^~~~
regex.c:543:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:544:2: note: here
case 2:
^~~~
regex.c:545:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
*ptr++ = '.';
~~~~~~~^~~~~
regex.c:546:2: note: here
case 1:
^~~~
modules.c: In function ‘semanage_module_get_path’:
modules.c:602:7: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (file == NULL) file = "hll";
^
modules.c:603:3: note: here
case SEMANAGE_MODULE_PATH_CIL:
^~~~
modules.c:604:7: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (file == NULL) file = "cil";
^
modules.c:605:3: note: here
case SEMANAGE_MODULE_PATH_LANG_EXT:
^~~~
Signed-off-by: Stephen Smalley <[email protected]>
---
libselinux/src/regex.c | 4 ++++
libsemanage/src/modules.c | 2 ++
libsepol/cil/src/cil_parser.c | 2 ++
libsepol/cil/src/cil_post.c | 1 +
4 files changed, 9 insertions(+)
diff --git a/libselinux/src/regex.c b/libselinux/src/regex.c
index 0c5ad27..ec1b0c4 100644
--- a/libselinux/src/regex.c
+++ b/libselinux/src/regex.c
@@ -539,12 +539,16 @@ truncated:
/* no break statements, fall-through is intended */
case 4:
*ptr++ = '.';
+ /* FALLTHRU */
case 3:
*ptr++ = '.';
+ /* FALLTHRU */
case 2:
*ptr++ = '.';
+ /* FALLTHRU */
case 1:
*ptr++ = '\0';
+ /* FALLTHRU */
default:
break;
}
diff --git a/libsemanage/src/modules.c b/libsemanage/src/modules.c
index 90c5e49..62af101 100644
--- a/libsemanage/src/modules.c
+++ b/libsemanage/src/modules.c
@@ -600,8 +600,10 @@ int semanage_module_get_path(semanage_handle_t *sh,
break;
case SEMANAGE_MODULE_PATH_HLL:
if (file == NULL) file = "hll";
+ /* FALLTHRU */
case SEMANAGE_MODULE_PATH_CIL:
if (file == NULL) file = "cil";
+ /* FALLTHRU */
case SEMANAGE_MODULE_PATH_LANG_EXT:
if (file == NULL) file = "lang_ext";
diff --git a/libsepol/cil/src/cil_parser.c b/libsepol/cil/src/cil_parser.c
index 101520c..585ea77 100644
--- a/libsepol/cil/src/cil_parser.c
+++ b/libsepol/cil/src/cil_parser.c
@@ -251,6 +251,7 @@ int cil_parser(char *_path, char *buffer, uint32_t size,
struct cil_tree **parse
case QSTRING:
tok.value[strlen(tok.value) - 1] = '\0';
tok.value = tok.value+1;
+ /* FALLTHRU */
case SYMBOL:
if (paren_count == 0) {
cil_log(CIL_ERR, "Symbol not inside parenthesis
at line %d of %s\n", tok.line, path);
@@ -275,6 +276,7 @@ int cil_parser(char *_path, char *buffer, uint32_t size,
struct cil_tree **parse
if (tok.type != END_OF_FILE) {
break;
}
+ /* FALLTHRU */
// Fall through if EOF
case END_OF_FILE:
if (paren_count > 0) {
diff --git a/libsepol/cil/src/cil_post.c b/libsepol/cil/src/cil_post.c
index 0d494ea..ad073e8 100644
--- a/libsepol/cil/src/cil_post.c
+++ b/libsepol/cil/src/cil_post.c
@@ -102,6 +102,7 @@ void cil_post_fc_fill_data(struct fc_data *fc, char *path)
break;
case '\\':
c++;
+ /* FALLTHRU */
default:
if (!fc->meta) {
fc->stem_len++;
--
2.9.4
