--- c/shared/include/cffwrite.h
+++ c/shared/include/cffwrite.h
@@ -168,7 +168,7 @@
    compatible with a destination font dict of the same FontName, the function
    returns 1 else it returns 0. */
 
-int cfwMergeFDArray(cfwCtx h, abfTopDict *top, int *newFDIndex);
+long cfwMergeFDArray(void *h, abfTopDict *top, int *newFDIndex);
 
 /* cfwMergeFDArray() merges all the fdArray font dicts of the passed-in source
    font top dict into the destination font. It also fills in the array pointed
--- c/shared/cffwrite/cffwrite.cpp
+++ c/shared/cffwrite/cffwrite.cpp
@@ -469,7 +469,8 @@
     return newFDIndex;
 }
 
-int cfwMergeFDArray(cfwCtx g, abfTopDict *top, int *newFDIndex) {
+long cfwMergeFDArray(void *g_, abfTopDict *top, int *newFDIndex) {
+    cfwCtx g = (cfwCtx)g_;
     abfFontDict *srcDict = &top->FDArray.array[0];
     int i = 0;
 
--- c/shared/dynarr.c
+++ c/shared/dynarr.c
@@ -68,6 +68,9 @@
    0. If the client has arranged to trap allocation failures in the memory
    callback functions by using setjmp/longjmp, for example, the -1 return will
    never occur and the macro wrappers provided will be safe to use. */
+#if defined __clang__
+__attribute__((no_sanitize("function")))
+#endif
 long dnaGrow(void *object, size_t elemsize, long index) {
     void *new_ptr;
     size_t new_size;
--- c/shared/pstoken.cpp
+++ c/shared/pstoken.cpp
@@ -199,7 +199,7 @@
         else {
             unsigned char cipher = hi_nib << 4 | nib;
             *dst++ = cipher ^ (h->cipher.r >> 8);
-            h->cipher.r = (cipher + h->cipher.r) * 52845 + 22719;
+            h->cipher.r = (unsigned)(cipher + h->cipher.r) * 52845 + 22719;
             hi_nib = -1;
         }
     } while (src < end);
@@ -230,7 +230,7 @@
     for (i = 0; i < length; i++) {
         unsigned char cipher = *src++;
         *dst++ = cipher ^ (h->cipher.r >> 8);
-        h->cipher.r = (cipher + h->cipher.r) * 52845 + 22719;
+        h->cipher.r = (unsigned)(cipher + h->cipher.r) * 52845 + 22719;
     }
 
     return 0;
--- c/shared/t1cstr.cpp
+++ c/shared/t1cstr.cpp
@@ -1494,13 +1494,13 @@
 
         /* Prime state from random initial bytes */
         while (lenIV--)
-            r = (*c++ + r) * 52845 + 22719;
+            r = (unsigned)(*c++ + r) * 52845 + 22719;
 
         /* Decrypt and copy bytes */
         while (cnt--) {
             unsigned char c1 = *c++;
             *p++ = c1 ^ (r >> 8);
-            r = (c1 + r) * 52845 + 22719;
+            r = (unsigned)(c1 + r) * 52845 + 22719;
         }
     }
     return t1cSuccess;
@@ -1524,7 +1524,7 @@
         while (lenIV--) {
             single = *c ^ (r2 >> 8);
             r2 = (*c++ + r2) * 16477 + 21483;
-            r1 = (single + r1) * 52845 + 22719;
+            r1 = (unsigned)(single + r1) * 52845 + 22719;
         }
 
         /* Double decrypt and copy bytes */
@@ -1533,7 +1533,7 @@
             single = c1 ^ (r2 >> 8);
             r2 = (c1 + r2) * 16477 + 21483;
             *p++ = single ^ (r1 >> 8);
-            r1 = (single + r1) * 52845 + 22719;
+            r1 = (unsigned)(single + r1) * 52845 + 22719;
         }
     }
     return t1cSuccess;
--- c/shared/t1write/t1write.cpp
+++ c/shared/t1write/t1write.cpp
@@ -166,7 +166,7 @@
     char *q = buf;
     while (cnt--) {
         uint8_t c = *p++ ^ h->eexec.r >> 8;
-        h->eexec.r = (c + h->eexec.r) * 52845 + 22719;
+        h->eexec.r = (unsigned)(c + h->eexec.r) * 52845 + 22719;
         *q++ = hexmap[c >> 4 & 0xf];
         *q++ = hexmap[c & 0xf];
     }
@@ -192,7 +192,7 @@
             /* Binary eexec; encrypt in-place */
             while (cnt--) {
                 uint8_t c = *p ^ h->eexec.r >> 8;
-                h->eexec.r = (c + h->eexec.r) * 52845 + 22719;
+                h->eexec.r = (unsigned)(c + h->eexec.r) * 52845 + 22719;
                 *p++ = c;
             }
             writeDst(h, h->dst.cnt, h->dst.buf);
@@ -355,7 +355,7 @@
     p = data;
     for (i = 0; i < length; i++) {
         uint8_t c = *p ^ (r >> 8);
-        r = (c + r) * 52845 + 22719;
+        r = (unsigned)(c + r) * 52845 + 22719;
         *p++ = c;
     }
 
--- c/shared/t2cstr.cpp
+++ c/shared/t2cstr.cpp
@@ -661,7 +661,7 @@
 
     /* Compute mask length and unused bit mask */
     h->mask.length = (short)((h->stems.cnt + 7) / 8);
-    h->mask.unused = ~(~0 << (h->mask.length * 8 - h->stems.cnt));
+    h->mask.unused = ~(~0U << (h->mask.length * 8 - h->stems.cnt));
 
     return 0;
 }
--- c/shared/ttread.cpp
+++ c/shared/ttread.cpp
@@ -673,7 +673,7 @@
 
 /* Read 4-byte signed number. */
 static int32_t sread4(ttrCtx h) {
-    uint32_t value = (int32_t)read1(h) << 24;
+    uint32_t value = (uint32_t)read1(h) << 24;
     value |= (uint32_t)read1(h) << 16;
     value |= (uint32_t)read1(h) << 8;
     value |= (uint32_t)read1(h);