add comments about ignoring some warnings which are OK

1 files changed, 8 insertions, 0 deletions

diff --git a/archival/rpm.c b/archival/rpm.c
index 30cdc93fb..41c6129ad 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -260,12 +260,16 @@ rpm_index **rpm_gettags(int fd, int *num_tags)
 int bsearch_rpmtag(const void *key, const void *item)
 {
         rpm_index **tmp = (rpm_index **) item;
+        /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
+         * it's ok to ignore it because this isn't a 'real' pointer */
         return ((int) key - tmp[0]->tag);
 }
 
 int rpm_getcount(int tag)
 {
         rpm_index **found;
+        /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
+         * it's ok to ignore it because tag won't be used as a pointer */
         found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
         if (!found) return 0;
         else return found[0]->count;
@@ -274,6 +278,8 @@ int rpm_getcount(int tag)
 char *rpm_getstring(int tag, int itemindex)
 {
         rpm_index **found;
+        /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
+         * it's ok to ignore it because tag won't be used as a pointer */
         found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
         if (!found || itemindex >= found[0]->count) return NULL;
         if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
@@ -288,6 +294,8 @@ int rpm_getint(int tag, int itemindex)
 {
         rpm_index **found;
         int n, *tmpint;
+        /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
+         * it's ok to ignore it because tag won't be used as a pointer */
         found = bsearch((void *) tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
         if (!found || itemindex >= found[0]->count) return -1;
         tmpint = (int *) (map + found[0]->offset);