Resolve some -Wsign-conversion warnings from clang

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

3 files changed, 8 insertions, 8 deletions

diff --git a/hash.c b/hash.c
index 5877dc6..6a60896 100644
--- a/hash.c
+++ b/hash.c
@@ -174,14 +174,14 @@ value_first_cmp(const void *v1, const void *v2)
 HashBucketPtr *
 hashArray(HashTablePtr table, int value_first)
 {
-    int j;
+    unsigned int j;
     int n = hashElements(table);
     HashBucketPtr *dst = malloc((n + 1) * sizeof(HashBucketPtr));
     if (dst == NULL)
         return NULL;
 
     j = 0;
-    for (int i = 0; i < NUMBUCKETS; i++) {
+    for (unsigned int i = 0; i < NUMBUCKETS; i++) {
         while (table[i]) {
             dst[j++] = table[i];
             table[i] = table[i]->next;
@@ -198,7 +198,7 @@ hashArray(HashTablePtr table, int value_first)
 void
 destroyHashArray(HashBucketPtr *array)
 {
-    int i = 0;
+    unsigned int i = 0;
 
     while (array[i]) {
         free(array[i]->key);
diff --git a/ident.c b/ident.c
index 4a1d1eb..37cc1e1 100644
--- a/ident.c
+++ b/ident.c
@@ -392,8 +392,8 @@ bdfend(fontFile *f)
 {
     int c;
     char *buf = NULL;
-    int bufsize = 0;
-    int i = 0;
+    size_t bufsize = 0;
+    unsigned int i = 0;
 
     do {
         c = fontFileGetc(f);
diff --git a/mkfontscale.c b/mkfontscale.c
index 79d41bc..f9333ce 100644
--- a/mkfontscale.c
+++ b/mkfontscale.c
@@ -500,7 +500,7 @@ unsafe(char c)
 static const char *
 safe(const char *s)
 {
-    int i, len, safe_flag = 1;
+    unsigned int i, len, safe_flag = 1;
     char *t;
 
     i = 0;
@@ -1181,7 +1181,7 @@ checkEncoding(FT_Face face, const char *encoding_name)
                 else
                     koi8 = 0;
                 for (int i = encoding->first; i < encoding->size; i++) {
-                    int c = FontEncRecode(i, mapping);
+                    unsigned int c = FontEncRecode(i, mapping);
                     if (CODE_IGNORED(c) ||
                         (koi8 &&
                          ((c >= 0x2200 && c < 0x2600) || c == 0x00b2))) {
@@ -1270,7 +1270,7 @@ checkExtraEncoding(FT_Face face, const char *encoding_name, int found)
 
             /* Export as Unicode if there are at least 15 BMP
                characters that are not a space or ignored. */
-            for (int c = 0x21; c < 0x10000; c++) {
+            for (unsigned int c = 0x21; c < 0x10000; c++) {
                 if (CODE_IGNORED(c))
                     continue;
                 if (FT_Get_Char_Index(face, c) > 0)