diff --git a/bp.c b/bp.c
index c9998d7..ec2b180 100644
--- a/bp.c
+++ b/bp.c
@@ -202,9 +202,9 @@ static void cleanup(void)
     if (modifying_file && backup_file) {
         rewind(modifying_file);
         ftruncate(fileno(modifying_file), 0);
-        fwrite(backup_file->start, 1,
-               (size_t)(backup_file->end - backup_file->start),
-               modifying_file);
+        (void)fwrite(backup_file->start, 1,
+                     (size_t)(backup_file->end - backup_file->start),
+                     modifying_file);
         fclose(modifying_file);
         modifying_file = NULL;
     }
diff --git a/pattern.c b/pattern.c
index 0faf39d..6340047 100644
--- a/pattern.c
+++ b/pattern.c
@@ -50,7 +50,7 @@ pat_t *new_pat(file_t *f, const char *start, const char *end, size_t minlen, ssi
 static pat_t *new_range(file_t *f, const char *start, const char *end, size_t min, ssize_t max, pat_t *repeating, pat_t *sep)
 {
     size_t minlen = min*repeating->min_matchlen + (min > 0 ? min-1 : 0)*(sep ? sep->min_matchlen : 0);
-    ssize_t maxlen = (max == -1 || UNBOUNDED(repeating) || (max != 0 && max != 1 && sep && UNBOUNDED(sep))) ? -1
+    ssize_t maxlen = (max == -1 || UNBOUNDED(repeating) || (max != 0 && max != 1 && sep && UNBOUNDED(sep))) ? (ssize_t)-1
         : max*repeating->max_matchlen + (ssize_t)(max > 0 ? min-1 : 0)*(ssize_t)(sep ? sep->min_matchlen : 0);
     pat_t *range = new_pat(f, start, end, minlen, maxlen, BP_REPEAT);
     range->args.repetitions.min = min;
@@ -141,7 +141,7 @@ pat_t *chain_together(file_t *f, pat_t *first, pat_t *second)
     if (first == NULL) return second;
     if (second == NULL) return first;
     size_t minlen = first->min_matchlen + second->min_matchlen;
-    ssize_t maxlen = (UNBOUNDED(first) || UNBOUNDED(second)) ? -1 : first->max_matchlen + second->max_matchlen;
+    ssize_t maxlen = (UNBOUNDED(first) || UNBOUNDED(second)) ? (ssize_t)-1 : first->max_matchlen + second->max_matchlen;
     pat_t *chain = new_pat(f, first->start, second->end, minlen, maxlen, BP_CHAIN);
     chain->args.multiple.first = first;
     chain->args.multiple.second = second;
@@ -174,7 +174,7 @@ pat_t *either_pat(file_t *f, pat_t *first, pat_t *second)
     if (first == NULL) return second;
     if (second == NULL) return first;
     size_t minlen = first->min_matchlen < second->min_matchlen ? first->min_matchlen : second->min_matchlen;
-    ssize_t maxlen = (UNBOUNDED(first) || UNBOUNDED(second)) ? -1 : 
+    ssize_t maxlen = (UNBOUNDED(first) || UNBOUNDED(second)) ? (ssize_t)-1 : 
         (first->max_matchlen > second->max_matchlen ? first->max_matchlen : second->max_matchlen);
     pat_t *either = new_pat(f, first->start, second->end, minlen, maxlen, BP_OTHERWISE);
     either->args.multiple.first = first;
diff --git a/utf8.h b/utf8.h
index fb353d9..8d7d969 100644
--- a/utf8.h
+++ b/utf8.h
@@ -12,7 +12,7 @@
 // (i.e. skip forward one codepoint at a time, not one byte at a time)
 //
 __attribute__((nonnull, pure))
-static inline const char *next_char(file_t *f, const char *str)
+inline const char *next_char(file_t *f, const char *str)
 {
     if (__builtin_expect(str+1 <= f->end && (str[0] & 0x80) == 0x0, 1))
         return str+1;
@@ -30,7 +30,7 @@ static inline const char *next_char(file_t *f, const char *str)
 // (i.e. skip backwards one codepoint at a time, not one byte at a time)
 //
 __attribute__((nonnull, pure))
-static inline const char *prev_char(file_t *f, const char *str)
+inline const char *prev_char(file_t *f, const char *str)
 {
     if (__builtin_expect(str-1 >= f->start && (str[-1] & 0x80) == 0x0, 1))
         return str-1;