fix bug in FLAC__metadata_object_vorbiscomment_replace_comment()

diff --git a/src/libFLAC/metadata_object.c b/src/libFLAC/metadata_object.c
index 7ebe319..4d68ac9 100644 (file)
--- a/src/libFLAC/metadata_object.c
+++ b/src/libFLAC/metadata_object.c
@@ -1265,16 +1265,21 @@ FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__St
 
                field_name_length = eq-entry.entry;
 
-               if((i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length)) >= 0) {
+               i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length);
+               if(i >= 0) {
                        unsigned index = (unsigned)i;
                        if(!FLAC__metadata_object_vorbiscomment_set_comment(object, index, entry, copy))
                                return false;
-                       if(all && (index+1 < object->data.vorbis_comment.num_comments)) {
-                               for(i = vorbiscomment_find_entry_from_(object, index+1, (const char *)entry.entry, field_name_length); i >= 0; ) {
-                                       if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i))
+                       entry = object->data.vorbis_comment.comments[index];
+                       index++; /* skip over replaced comment */
+                       if(all && index < object->data.vorbis_comment.num_comments) {
+                               i = vorbiscomment_find_entry_from_(object, index, (const char *)entry.entry, field_name_length);
+                               while(i >= 0) {
+                                       index = (unsigned)i;
+                                       if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, index))
                                                return false;
-                                       if((unsigned)i < object->data.vorbis_comment.num_comments)
-                                               i = vorbiscomment_find_entry_from_(object, (unsigned)i, (const char *)entry.entry, field_name_length);
+                                       if(index < object->data.vorbis_comment.num_comments)
+                                               i = vorbiscomment_find_entry_from_(object, index, (const char *)entry.entry, field_name_length);
                                        else
                                                i = -1;
                                }