From fe122d557ba8cf79a3398647e2b9ca4b69e62708 Mon Sep 17 00:00:00 2001
From: Michael R Sweet <msweet@msweet.org>
Date: Thu, 25 Sep 2025 17:12:33 -0400
Subject: [PATCH] Resolve clang warnings, update Xcode project.

---
 pdfio-array.c                   |  4 ++--
 pdfio-common.c                  | 12 ++++++------
 pdfio-content.c                 |  2 +-
 pdfio-crypto.c                  |  6 ++++--
 pdfio-dict.c                    | 10 +++++-----
 pdfio-file.c                    | 26 +++++++++++++-------------
 pdfio-object.c                  | 10 +++++-----
 pdfio-page.c                    |  2 +-
 pdfio-stream.c                  |  4 ++--
 pdfio-string.c                  |  2 +-
 pdfio-token.c                   |  6 +++---
 pdfio-value.c                   |  4 ++--
 pdfio.xcodeproj/project.pbxproj | 15 ++++++++++++++-
 testpdfio.c                     |  3 ++-
 ttf.c                           |  6 +++---
 15 files changed, 64 insertions(+), 48 deletions(-)

diff --git a/pdfio-array.c b/pdfio-array.c
index de2dd30..84f96e7 100644
--- a/pdfio-array.c
+++ b/pdfio-array.c
@@ -262,7 +262,7 @@ pdfioArrayCopy(pdfio_file_t  *pdf,	// I - PDF file
 			vdst;		// Current destination value
 
 
-  PDFIO_DEBUG("pdfioArrayCopy(pdf=%p, a=%p(%p))\n", pdf, a, a ? a->pdf : NULL);
+  PDFIO_DEBUG("pdfioArrayCopy(pdf=%p, a=%p(%p))\n", (void *)pdf, (void *)a, a ? (void *)a->pdf : NULL);
 
   // Create the new array...
   if ((na = pdfioArrayCreate(pdf)) == NULL)
@@ -606,7 +606,7 @@ _pdfioArrayRead(pdfio_file_t   *pdf,	// I - PDF file
   _pdfio_value_t	value;		// Value
 
 
-  PDFIO_DEBUG("_pdfioArrayRead(pdf=%p, tb=%p)\n", pdf, tb);
+  PDFIO_DEBUG("_pdfioArrayRead(pdf=%p, tb=%p)\n", (void *)pdf, (void *)tb);
 
   // Create an array...
   if ((array = pdfioArrayCreate(pdf)) == NULL)
diff --git a/pdfio-common.c b/pdfio-common.c
index e88b081..c6889aa 100644
--- a/pdfio-common.c
+++ b/pdfio-common.c
@@ -27,7 +27,7 @@ bool					// O - `true` on sucess, `false` on EOF
 _pdfioFileConsume(pdfio_file_t *pdf,	// I - PDF file
                   size_t       bytes)	// I - Bytes to consume
 {
-  PDFIO_DEBUG("_pdfioFileConsume(pdf=%p, bytes=%u)\n", pdf, (unsigned)bytes);
+  PDFIO_DEBUG("_pdfioFileConsume(pdf=%p, bytes=%u)\n", (void *)pdf, (unsigned)bytes);
 
   if ((size_t)(pdf->bufend - pdf->bufptr) > bytes)
     pdf->bufptr += bytes;
@@ -91,7 +91,7 @@ _pdfioFileError(pdfio_file_t *pdf,	// I - PDF file
 bool					// O - `true` on success, `false` on failure
 _pdfioFileFlush(pdfio_file_t *pdf)	// I - PDF file
 {
-  PDFIO_DEBUG("_pdfioFileFlush(pdf=%p)\n", pdf);
+  PDFIO_DEBUG("_pdfioFileFlush(pdf=%p)\n", (void *)pdf);
 
   if (pdf->bufptr > pdf->buffer)
   {
@@ -142,7 +142,7 @@ _pdfioFileGets(pdfio_file_t *pdf,	// I - PDF file
 	*bufend = buffer + bufsize - 1;	// Pointer to end of buffer
 
 
-  PDFIO_DEBUG("_pdfioFileGets(pdf=%p, buffer=%p, bufsize=%lu, discard=%s) bufpos=%ld, buffer=%p, bufptr=%p, bufend=%p, offset=%lu\n", pdf, buffer, (unsigned long)bufsize, discard ? "true" : "false", (long)pdf->bufpos, pdf->buffer, pdf->bufptr, pdf->bufend, (unsigned long)(pdf->bufpos + (pdf->bufptr - pdf->buffer)));
+  PDFIO_DEBUG("_pdfioFileGets(pdf=%p, buffer=%p, bufsize=%lu, discard=%s) bufpos=%ld, buffer=%p, bufptr=%p, bufend=%p, offset=%lu\n", (void *)pdf, (void *)buffer, (unsigned long)bufsize, discard ? "true" : "false", (long)pdf->bufpos, (void *)pdf->buffer, (void *)pdf->bufptr, (void *)pdf->bufend, (unsigned long)(pdf->bufpos + (pdf->bufptr - pdf->buffer)));
 
   while (!eol)
   {
@@ -359,7 +359,7 @@ _pdfioFileSeek(pdfio_file_t *pdf,	// I - PDF file
                off_t        offset,	// I - Offset
                int          whence)	// I - Offset base
 {
-  PDFIO_DEBUG("_pdfioFileSeek(pdf=%p, offset=%ld, whence=%d) pdf->bufpos=%lu\n", pdf, (long)offset, whence, (unsigned long)(pdf ? pdf->bufpos : 0));
+  PDFIO_DEBUG("_pdfioFileSeek(pdf=%p, offset=%ld, whence=%d) pdf->bufpos=%lu\n", (void *)pdf, (long)offset, whence, (unsigned long)(pdf ? pdf->bufpos : 0));
 
   // Adjust offset for relative seeks...
   if (whence == SEEK_CUR)
@@ -376,7 +376,7 @@ _pdfioFileSeek(pdfio_file_t *pdf,	// I - PDF file
       // Yes, seek within existing buffer...
       pdf->bufptr = pdf->buffer + (offset - pdf->bufpos);
       PDFIO_DEBUG("_pdfioFileSeek: Seek within buffer, bufpos=%ld.\n", (long)pdf->bufpos);
-      PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p(<%02X%02X...>), bufend=%p\n", pdf->buffer, pdf->bufptr, pdf->bufptr[0] & 255, pdf->bufptr[1] & 255, pdf->bufend);
+      PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p(<%02X%02X...>), bufend=%p\n", (void *)pdf->buffer, (void *)pdf->bufptr, pdf->bufptr[0] & 255, pdf->bufptr[1] & 255, (void *)pdf->bufend);
       return (offset);
     }
 
@@ -411,7 +411,7 @@ _pdfioFileSeek(pdfio_file_t *pdf,	// I - PDF file
   }
 
   PDFIO_DEBUG("_pdfioFileSeek: Reset bufpos=%ld, offset=%lu.\n", (long)pdf->bufpos, (unsigned long)offset);
-  PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p, bufend=%p\n", pdf->buffer, pdf->bufptr, pdf->bufend);
+  PDFIO_DEBUG("_pdfioFileSeek: buffer=%p, bufptr=%p, bufend=%p\n", (void *)pdf->buffer, (void *)pdf->bufptr, (void *)pdf->bufend);
 
   pdf->bufpos = offset;
 
diff --git a/pdfio-content.c b/pdfio-content.c
index 771073d..81e1134 100644
--- a/pdfio-content.c
+++ b/pdfio-content.c
@@ -360,7 +360,7 @@ pdfioArrayCreateColorFromPrimaries(
   double	matrix[3][3];		// CIE XYZ transform matrix
 
 
-  PDFIO_DEBUG("pdfioFileCreateCalibratedColorFromPrimaries(pdf=%p, num_colors=%lu, gamma=%.6f, wx=%.6f, wy=%.6f, rx=%.6f, ry=%.6f, gx=%.6f, gy=%.6f, bx=%.6f, by=%.6f)\n", pdf, (unsigned long)num_colors, gamma, wx, wy, rx, ry, gx, gy, bx, by);
+  PDFIO_DEBUG("pdfioFileCreateCalibratedColorFromPrimaries(pdf=%p, num_colors=%lu, gamma=%.6f, wx=%.6f, wy=%.6f, rx=%.6f, ry=%.6f, gx=%.6f, gy=%.6f, bx=%.6f, by=%.6f)\n", (void *)pdf, (unsigned long)num_colors, gamma, wx, wy, rx, ry, gx, gy, bx, by);
 
   // Range check input...
   if (!pdf || (num_colors != 1 && num_colors != 3) || gamma <= 0.0 || ry == 0.0 || gy == 0.0 || by == 0.0)
diff --git a/pdfio-crypto.c b/pdfio-crypto.c
index 53859bb..3aca546 100644
--- a/pdfio-crypto.c
+++ b/pdfio-crypto.c
@@ -411,7 +411,7 @@ _pdfioCryptoMakeReader(
   uint8_t	digest[16];		// MD5 digest value
 
 
-  PDFIO_DEBUG("_pdfioCryptoMakeReader(pdf=%p, obj=%p(%d), ctx=%p, iv=%p, ivlen=%p(%d))\n", pdf, obj, (int)obj->number, ctx, iv, ivlen, (int)*ivlen);
+  PDFIO_DEBUG("_pdfioCryptoMakeReader(pdf=%p, obj=%p(%d), ctx=%p, iv=%p, ivlen=%p(%d))\n", (void *)pdf, (void *)obj, (int)obj->number, (void *)ctx, (void *)iv, (void *)ivlen, (int)*ivlen);
 
   // Range check input...
   if (!pdf)
@@ -454,6 +454,8 @@ _pdfioCryptoMakeReader(
           return (NULL);
         }
 
+        __attribute__((fallthrough));
+
     case PDFIO_ENCRYPTION_RC4_128 :
 	// Copy the key data for the MD5 hash.
 	memcpy(data, pdf->file_key, 16);
@@ -504,7 +506,7 @@ _pdfioCryptoMakeWriter(
   uint8_t	digest[16];		/* MD5 digest value */
 
 
-  PDFIO_DEBUG("_pdfioCryptoMakeWriter(pdf=%p, obj=%p(%d), ctx=%p, iv=%p, ivlen=%p(%d))\n", pdf, obj, (int)obj->number, ctx, iv, ivlen, (int)*ivlen);
+  PDFIO_DEBUG("_pdfioCryptoMakeWriter(pdf=%p, obj=%p(%d), ctx=%p, iv=%p, ivlen=%p(%d))\n", (void *)pdf, (void *)obj, (int)obj->number, (void *)ctx, (void *)iv, (void *)ivlen, (int)*ivlen);
 
   // Range check input...
   if (!pdf)
diff --git a/pdfio-dict.c b/pdfio-dict.c
index 642871c..663423f 100644
--- a/pdfio-dict.c
+++ b/pdfio-dict.c
@@ -32,7 +32,7 @@ pdfioDictClear(pdfio_dict_t *dict,	// I - Dictionary
 		pkey;			// Search key
 
 
-  PDFIO_DEBUG("pdfioDictClear(dict=%p, key=\"%s\")\n", dict, key);
+  PDFIO_DEBUG("pdfioDictClear(dict=%p, key=\"%s\")\n", (void *)dict, key);
 
   if (!dict || !key)
     return (false);
@@ -77,7 +77,7 @@ pdfioDictCopy(pdfio_file_t *pdf,	// I - PDF file
   _pdfio_value_t	v;		// Current destination value
 
 
-  PDFIO_DEBUG("pdfioDictCopy(pdf=%p, dict=%p(%p))\n", pdf, dict, dict ? dict->pdf : NULL);
+  PDFIO_DEBUG("pdfioDictCopy(pdf=%p, dict=%p(%p))\n", (void *)pdf, (void *)dict, dict ? (void *)dict->pdf : NULL);
 
   // Create the new dictionary...
   if ((ndict = pdfioDictCreate(pdf)) == NULL)
@@ -525,7 +525,7 @@ _pdfioDictGetValue(pdfio_dict_t *dict,	// I - Dictionary
 		*match;			// Matching key pair
 
 
-  PDFIO_DEBUG("_pdfioDictGetValue(dict=%p, key=\"%s\")\n", dict, key);
+  PDFIO_DEBUG("_pdfioDictGetValue(dict=%p, key=\"%s\")\n", (void *)dict, key);
 
   if (!dict || !dict->num_pairs || !key)
   {
@@ -610,7 +610,7 @@ _pdfioDictRead(pdfio_file_t   *pdf,	// I - PDF file
   _pdfio_value_t	value;		// Dictionary value
 
 
-  PDFIO_DEBUG("_pdfioDictRead(pdf=%p, obj=%p, tb=%p, depth=%lu)\n", pdf, obj, tb, (unsigned long)depth);
+  PDFIO_DEBUG("_pdfioDictRead(pdf=%p, obj=%p, tb=%p, depth=%lu)\n", (void *)pdf, (void *)obj, (void *)tb, (unsigned long)depth);
 
   // Create a dictionary and start reading...
   if ((dict = pdfioDictCreate(pdf)) == NULL)
@@ -984,7 +984,7 @@ _pdfioDictSetValue(
   _pdfio_pair_t	*pair;			// Current pair
 
 
-  PDFIO_DEBUG("_pdfioDictSetValue(dict=%p, key=\"%s\", value=%p)\n", dict, key, (void *)value);
+  PDFIO_DEBUG("_pdfioDictSetValue(dict=%p, key=\"%s\", value=%p)\n", (void *)dict, key, (void *)value);
 
   // See if the key is already set...
   if (dict->num_pairs > 0)
diff --git a/pdfio-file.c b/pdfio-file.c
index 7732660..5d46724 100644
--- a/pdfio-file.c
+++ b/pdfio-file.c
@@ -756,7 +756,7 @@ pdfioFileFindObj(
   if (number == pdf->objs[current]->number)
   {
     // Fast match...
-    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)current, pdf->objs[current]);
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)current, (void *)pdf->objs[current]);
     return (pdf->objs[current]);
   }
   else if (number < pdf->objs[current]->number)
@@ -784,12 +784,12 @@ pdfioFileFindObj(
 
   if (number == pdf->objs[left]->number)
   {
-    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)left, pdf->objs[left]);
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)left, (void *)pdf->objs[left]);
     return (pdf->objs[left]);
   }
   else if (number == pdf->objs[right]->number)
   {
-    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)right, pdf->objs[right]);
+    PDFIO_DEBUG("pdfioFileFindObj: Returning %lu (%p)\n", (unsigned long)right, (void *)pdf->objs[right]);
     return (pdf->objs[right]);
   }
   else
@@ -1183,7 +1183,7 @@ pdfioFileOpen(
   }
   else
   {
-    PDFIO_DEBUG("pdfioFileOpen: line=%p,ptr=%p(\"%s\")\n", line, ptr, ptr);
+    PDFIO_DEBUG("pdfioFileOpen: line=%p,ptr=%p(\"%s\")\n", (void *)line, (void *)ptr, ptr);
 
     xref_offset = (off_t)strtol(ptr + 9, NULL, 10);
 
@@ -1414,7 +1414,7 @@ add_obj(pdfio_file_t   *pdf,		// I - PDF file
   obj->generation = generation;
   obj->offset     = offset;
 
-  PDFIO_DEBUG("add_obj: obj=%p, ->pdf=%p, ->number=%lu, ->offset=%lu\n", obj, pdf, (unsigned long)obj->number, (unsigned long)offset);
+  PDFIO_DEBUG("add_obj: obj=%p, ->pdf=%p, ->number=%lu, ->offset=%lu\n", (void *)obj, (void *)pdf, (unsigned long)obj->number, (unsigned long)offset);
 
   // Insert object into array as needed...
   if (pdf->num_objs == 0 || obj->number > pdf->objs[pdf->num_objs - 1]->number)
@@ -1710,7 +1710,7 @@ get_lconv(void)
 
   if ((loc = localeconv()) != NULL)
   {
-    PDFIO_DEBUG("get_lconv: loc=%p, loc->decimal_point=\"%s\"\n", loc, loc->decimal_point);
+    PDFIO_DEBUG("get_lconv: loc=%p, loc->decimal_point=\"%s\"\n", (void *)loc, loc->decimal_point);
 
     if (!loc->decimal_point || !strcmp(loc->decimal_point, "."))
       loc = NULL;
@@ -1747,7 +1747,7 @@ load_obj_stream(pdfio_obj_t *obj)	// I - Object to load
   int			count;		// Count of objects
 
 
-  PDFIO_DEBUG("load_obj_stream(obj=%p(%d))\n", obj, (int)obj->number);
+  PDFIO_DEBUG("load_obj_stream(obj=%p(%d))\n", (void *)obj, (int)obj->number);
 
   // Open the object stream...
   if ((st = pdfioObjOpenStream(obj, true)) == NULL)
@@ -2014,7 +2014,7 @@ load_xref(
         goto repair;
       }
 
-      PDFIO_DEBUG("load_xref: tb.bufptr=%p, tb.bufend=%p, tb.bufptr[0]=0x%02x, tb.bufptr[0]=0x%02x\n", tb.bufptr, tb.bufend, tb.bufptr[0], tb.bufptr[1]);
+      PDFIO_DEBUG("load_xref: tb.bufptr=%p, tb.bufend=%p, tb.bufptr[0]=0x%02x, tb.bufptr[0]=0x%02x\n", (void *)tb.bufptr, (void *)tb.bufend, tb.bufptr[0], tb.bufptr[1]);
       if (tb.bufptr && tb.bufptr < tb.bufend && (tb.bufptr[0] == 0x0d || tb.bufptr[0] == 0x0a))
 	tb.bufptr ++;			// Skip trailing CR or LF after token
 
@@ -2207,7 +2207,7 @@ load_xref(
       {
         if ((obj = pdfioFileFindObj(pdf, sobjs[i])) != NULL)
         {
-	  PDFIO_DEBUG("load_xref: Loading compressed object stream %lu (pdf=%p, obj->pdf=%p).\n", (unsigned long)sobjs[i], pdf, obj->pdf);
+	  PDFIO_DEBUG("load_xref: Loading compressed object stream %lu (pdf=%p, obj->pdf=%p).\n", (unsigned long)sobjs[i], (void *)pdf, (void *)obj->pdf);
 
           if (!load_obj_stream(obj))
             return (false);
@@ -2386,7 +2386,7 @@ load_xref(
     goto repair;
   }
 
-  PDFIO_DEBUG("load_xref: Root=%p(%lu)\n", pdf->root_obj, (unsigned long)pdf->root_obj->number);
+  PDFIO_DEBUG("load_xref: Root=%p(%lu)\n", (void *)pdf->root_obj, (unsigned long)pdf->root_obj->number);
 
   if ((pages_obj = pdfioDictGetObj(pdfioObjGetDict(pdf->root_obj), "Pages")) == NULL)
   {
@@ -2394,7 +2394,7 @@ load_xref(
     goto repair;
   }
 
-  PDFIO_DEBUG("load_xref: Pages=%p(%lu)\n", pdf->root_obj, (unsigned long)pdf->root_obj->number);
+  PDFIO_DEBUG("load_xref: Pages=%p(%lu)\n", (void *)pages_obj, (unsigned long)pages_obj->number);
 
   return (load_pages(pdf, pages_obj, 0));
 
@@ -2608,7 +2608,7 @@ repair_xref(
     return (false);
   }
 
-  PDFIO_DEBUG("repair_xref: Root=%p(%lu)\n", pdf->root_obj, (unsigned long)pdf->root_obj->number);
+  PDFIO_DEBUG("repair_xref: Root=%p(%lu)\n", (void *)pdf->root_obj, (unsigned long)pdf->root_obj->number);
 
   if ((pages_obj = pdfioDictGetObj(pdfioObjGetDict(pdf->root_obj), "Pages")) == NULL)
   {
@@ -2616,7 +2616,7 @@ repair_xref(
     return (false);
   }
 
-  PDFIO_DEBUG("repair_xref: Pages=%p(%lu)\n", pages_obj, (unsigned long)pages_obj->number);
+  PDFIO_DEBUG("repair_xref: Pages=%p(%lu)\n", (void *)pages_obj, (unsigned long)pages_obj->number);
 
   // Load pages...
   return (load_pages(pdf, pages_obj, 0));
diff --git a/pdfio-object.c b/pdfio-object.c
index 8f13fbd..b480404 100644
--- a/pdfio-object.c
+++ b/pdfio-object.c
@@ -69,7 +69,7 @@ pdfioObjCopy(pdfio_file_t *pdf,		// I - PDF file
   ssize_t	bytes;			// Bytes read
 
 
-  PDFIO_DEBUG("pdfioObjCopy(pdf=%p, srcobj=%p(%p))\n", pdf, srcobj, srcobj ? srcobj->pdf : NULL);
+  PDFIO_DEBUG("pdfioObjCopy(pdf=%p, srcobj=%p(%p))\n", (void *)pdf, (void *)srcobj, srcobj ? (void *)srcobj->pdf : NULL);
 
   // Range check input
   if (!pdf || !srcobj)
@@ -308,7 +308,7 @@ pdfioObjGetLength(pdfio_obj_t *obj)	// I - Object
   // Try getting the length, directly or indirectly
   if ((length = (size_t)pdfioDictGetNumber(obj->value.value.dict, "Length")) > 0)
   {
-    PDFIO_DEBUG("pdfioObjGetLength(obj=%p) returning %lu.\n", obj, (unsigned long)length);
+    PDFIO_DEBUG("pdfioObjGetLength(obj=%p) returning %lu.\n", (void *)obj, (unsigned long)length);
     return (length);
   }
 
@@ -328,7 +328,7 @@ pdfioObjGetLength(pdfio_obj_t *obj)	// I - Object
     return (0);
   }
 
-  PDFIO_DEBUG("pdfioObjGetLength(obj=%p) returning %lu.\n", obj, (unsigned long)lenobj->value.value.number);
+  PDFIO_DEBUG("pdfioObjGetLength(obj=%p) returning %lu.\n", (void *)obj, (unsigned long)lenobj->value.value.number);
 
   return ((size_t)lenobj->value.value.number);
 }
@@ -440,7 +440,7 @@ _pdfioObjLoad(pdfio_obj_t *obj)		// I - Object
   _pdfio_token_t	tb;		// Token buffer/stack
 
 
-  PDFIO_DEBUG("_pdfioObjLoad(obj=%p(%lu)), offset=%lu\n", obj, (unsigned long)obj->number, (unsigned long)obj->offset);
+  PDFIO_DEBUG("_pdfioObjLoad(obj=%p(%lu)), offset=%lu\n", (void *)obj, (unsigned long)obj->number, (unsigned long)obj->offset);
 
   // Seek to the start of the object and read its header...
   if (_pdfioFileSeek(obj->pdf, obj->offset, SEEK_SET) != obj->offset)
@@ -502,7 +502,7 @@ _pdfioObjLoad(pdfio_obj_t *obj)		// I - Object
     return (false);
   }
 
-  PDFIO_DEBUG("_pdfioObjLoad: tb.bufptr=%p, tb.bufend=%p, tb.bufptr[0]=0x%02x, tb.bufptr[1]=0x%02x\n", tb.bufptr, tb.bufend, tb.bufptr[0], tb.bufptr[1]);
+  PDFIO_DEBUG("_pdfioObjLoad: tb.bufptr=%p, tb.bufend=%p, tb.bufptr[0]=0x%02x, tb.bufptr[1]=0x%02x\n", (void *)tb.bufptr, (void *)tb.bufend, tb.bufptr[0], tb.bufptr[1]);
 
   _pdfioTokenFlush(&tb);
 
diff --git a/pdfio-page.c b/pdfio-page.c
index b350bd6..94e6ff8 100644
--- a/pdfio-page.c
+++ b/pdfio-page.c
@@ -28,7 +28,7 @@ pdfioPageCopy(pdfio_file_t *pdf,	// I - PDF file
   pdfio_obj_t	*dstpage;		// Destination page object
 
 
-  PDFIO_DEBUG("pdfioPageCopy(pdf=%p, srcpage=%p(%p))\n", pdf, srcpage, srcpage ? srcpage->pdf : NULL);
+  PDFIO_DEBUG("pdfioPageCopy(pdf=%p, srcpage=%p(%p))\n", (void *)pdf, (void *)srcpage, srcpage ? (void *)srcpage->pdf : NULL);
 
   // Range check input
   if (!pdf || !srcpage || srcpage->value.type != PDFIO_VALTYPE_DICT)
diff --git a/pdfio-stream.c b/pdfio-stream.c
index 808e454..4791b7c 100644
--- a/pdfio-stream.c
+++ b/pdfio-stream.c
@@ -427,7 +427,7 @@ _pdfioStreamOpen(pdfio_obj_t *obj,	// I - Object
   const char		*type;		// Object type
 
 
-  PDFIO_DEBUG("_pdfioStreamOpen(obj=%p(%u), decode=%s)\n", obj, (unsigned)obj->number, decode ? "true" : "false");
+  PDFIO_DEBUG("_pdfioStreamOpen(obj=%p(%u), decode=%s)\n", (void *)obj, (unsigned)obj->number, decode ? "true" : "false");
 
   // Allocate a new stream object...
   if ((st = (pdfio_stream_t *)calloc(1, sizeof(pdfio_stream_t))) == NULL)
@@ -848,7 +848,7 @@ pdfioStreamWrite(
 			*pptr;		// Previous raw buffer
 
 
-  PDFIO_DEBUG("pdfioStreamWrite(st=%p, buffer=%p, bytes=%lu)\n", st, buffer, (unsigned long)bytes);
+  PDFIO_DEBUG("pdfioStreamWrite(st=%p, buffer=%p, bytes=%lu)\n", (void *)st, buffer, (unsigned long)bytes);
 
   // Range check input...
   if (!st || st->pdf->mode != _PDFIO_MODE_WRITE || !buffer || !bytes)
diff --git a/pdfio-string.c b/pdfio-string.c
index d8033de..8790bc4 100644
--- a/pdfio-string.c
+++ b/pdfio-string.c
@@ -723,7 +723,7 @@ pdfioStringCreate(
   int		diff;			// Different
 
 
-  PDFIO_DEBUG("pdfioStringCreate(pdf=%p, s=\"%s\")\n", pdf, s);
+  PDFIO_DEBUG("pdfioStringCreate(pdf=%p, s=\"%s\")\n", (void *)pdf, s);
 
   // Range check input...
   if (!pdf || !s)
diff --git a/pdfio-token.c b/pdfio-token.c
index dd9cef6..c13adb8 100644
--- a/pdfio-token.c
+++ b/pdfio-token.c
@@ -54,7 +54,7 @@ static int	get_char(_pdfio_token_t *tb);
 void
 _pdfioTokenClear(_pdfio_token_t *tb)	// I - Token buffer/stack
 {
-  PDFIO_DEBUG("_pdfioTokenClear(tb=%p)\n", tb);
+  PDFIO_DEBUG("_pdfioTokenClear(tb=%p)\n", (void *)tb);
 
   while (tb->num_tokens > 0)
   {
@@ -132,7 +132,7 @@ _pdfioTokenGet(_pdfio_token_t *tb,	// I - Token buffer/stack
     if ((len = strlen(tb->tokens[tb->num_tokens])) > (bufsize - 1))
     {
       // Value too large...
-      PDFIO_DEBUG("_pdfioTokenGet(tb=%p, buffer=%p, bufsize=%u): Token '%s' from stack too large.\n", tb, buffer, (unsigned)bufsize, tb->tokens[tb->num_tokens]);
+      PDFIO_DEBUG("_pdfioTokenGet(tb=%p, buffer=%p, bufsize=%u): Token '%s' from stack too large.\n", (void *)tb, (void *)buffer, (unsigned)bufsize, tb->tokens[tb->num_tokens]);
       *buffer = '\0';
       return (false);
     }
@@ -140,7 +140,7 @@ _pdfioTokenGet(_pdfio_token_t *tb,	// I - Token buffer/stack
     memcpy(buffer, tb->tokens[tb->num_tokens], len);
     buffer[len] = '\0';
 
-    PDFIO_DEBUG("_pdfioTokenGet(tb=%p, buffer=%p, bufsize=%u): Popping '%s' from stack.\n", tb, buffer, (unsigned)bufsize, buffer);
+    PDFIO_DEBUG("_pdfioTokenGet(tb=%p, buffer=%p, bufsize=%u): Popping '%s' from stack.\n", (void *)tb, (void *)buffer, (unsigned)bufsize, buffer);
 
     free(tb->tokens[tb->num_tokens]);
     tb->tokens[tb->num_tokens] = NULL;
diff --git a/pdfio-value.c b/pdfio-value.c
index f4051f1..46bb234 100644
--- a/pdfio-value.c
+++ b/pdfio-value.c
@@ -46,7 +46,7 @@ _pdfioValueCopy(pdfio_file_t   *pdfdst,	// I - Destination PDF file
 #endif // DEBUG
 
 
-  PDFIO_DEBUG("_pdfioValueCopy(pdfdst=%p, vdst=%p, pdfsrc=%p, vsrc=%p(%s))\n", pdfdst, vdst, pdfsrc, vsrc, types[vsrc->type]);
+  PDFIO_DEBUG("_pdfioValueCopy(pdfdst=%p, vdst=%p, pdfsrc=%p, vsrc=%p(%s))\n", (void *)pdfdst, (void *)vdst, (void *)pdfsrc, (void *)vsrc, types[vsrc->type]);
 
   if (pdfdst == pdfsrc && vsrc->type != PDFIO_VALTYPE_BINARY)
   {
@@ -359,7 +359,7 @@ _pdfioValueRead(pdfio_file_t   *pdf,	// I - PDF file
 #endif // DEBUG
 
 
-  PDFIO_DEBUG("_pdfioValueRead(pdf=%p, obj=%p, v=%p)\n", pdf, obj, v);
+  PDFIO_DEBUG("_pdfioValueRead(pdf=%p, obj=%p, v=%p)\n", (void *)pdf, (void *)obj, (void *)v);
 
   if (!token)
     goto done;
diff --git a/pdfio.xcodeproj/project.pbxproj b/pdfio.xcodeproj/project.pbxproj
index e75deed..52bef57 100644
--- a/pdfio.xcodeproj/project.pbxproj
+++ b/pdfio.xcodeproj/project.pbxproj
@@ -261,7 +261,7 @@
 			isa = PBXProject;
 			attributes = {
 				BuildIndependentTargetsInParallel = YES;
-				LastUpgradeCheck = 1600;
+				LastUpgradeCheck = 2600;
 				TargetAttributes = {
 					273440AF263D6FE200FBFD63 = {
 						CreatedOnToolsVersion = 12.5;
@@ -353,12 +353,14 @@
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_COMPLETION_HANDLER_MISUSE = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_IMPLICIT_FALLTHROUGH = YES;
 				CLANG_WARN_IMPLICIT_SIGN_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
@@ -390,8 +392,11 @@
 					"DEBUG=1",
 				);
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_TREAT_INCOMPATIBLE_POINTER_TYPE_WARNINGS_AS_ERRORS = YES;
+				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = YES;
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES;
@@ -399,6 +404,7 @@
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNKNOWN_PRAGMAS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
@@ -409,6 +415,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				RUN_CLANG_STATIC_ANALYZER = YES;
 				SDKROOT = macosx;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Debug;
@@ -432,12 +439,14 @@
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_COMPLETION_HANDLER_MISUSE = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_IMPLICIT_FALLTHROUGH = YES;
 				CLANG_WARN_IMPLICIT_SIGN_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
@@ -467,8 +476,10 @@
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
 				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_TREAT_INCOMPATIBLE_POINTER_TYPE_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_MISSING_FIELD_INITIALIZERS = YES;
+				GCC_WARN_ABOUT_MISSING_NEWLINE = YES;
 				GCC_WARN_ABOUT_MISSING_PROTOTYPES = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES;
@@ -476,6 +487,7 @@
 				GCC_WARN_SIGN_COMPARE = YES;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNKNOWN_PRAGMAS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
@@ -485,6 +497,7 @@
 				MTL_FAST_MATH = YES;
 				RUN_CLANG_STATIC_ANALYZER = YES;
 				SDKROOT = macosx;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Release;
diff --git a/testpdfio.c b/testpdfio.c
index 70b8a08..230ab0a 100644
--- a/testpdfio.c
+++ b/testpdfio.c
@@ -483,7 +483,7 @@ do_test_file(const char *filename,	// I - PDF filename
 	  {
 	    dict = pdfioObjGetDict(obj);
 
-	    printf("    %u %u obj dict=%p(%lu pairs)\n", (unsigned)pdfioObjGetNumber(obj), (unsigned)pdfioObjGetGeneration(obj), dict, dict ? (unsigned long)dict->num_pairs : 0UL);
+	    printf("    %u %u obj dict=%p(%lu pairs)\n", (unsigned)pdfioObjGetNumber(obj), (unsigned)pdfioObjGetGeneration(obj), (void *)dict, dict ? (unsigned long)dict->num_pairs : 0UL);
 	    fputs("        ", stdout);
 	    _pdfioValueDebug(&obj->value, stdout);
 	    putchar('\n');
@@ -4019,6 +4019,7 @@ write_text_test(pdfio_file_t *pdf,		// I - PDF file
     else
     {
       testEnd(false);
+      fclose(fp);
       return (1);
     }
   }
diff --git a/ttf.c b/ttf.c
index ec9d538..31ed896 100644
--- a/ttf.c
+++ b/ttf.c
@@ -344,7 +344,7 @@ ttfCreate(const char   *filename,	// I - Filename
           ttf_err_cb_t err_cb,		// I - Error callback or `NULL` to log to stderr
           void         *err_data)	// I - Error callback data
 {
-  TTF_DEBUG("ttfCreate(filename=\"%s\", idx=%u, err_cb=%p, err_data=%p)\n", filename, (unsigned)idx, err_cb, err_data);
+  TTF_DEBUG("ttfCreate(filename=\"%s\", idx=%u, err_cb=%p, err_data=%p)\n", filename, (unsigned)idx, (void *)err_cb, err_data);
 
   // Range check input..
   if (!filename)
@@ -393,7 +393,7 @@ ttfCreateData(const void   *data,	// I - Buffer
 	      ttf_err_cb_t err_cb,	// I - Error callback or `NULL` to log to stderr
 	      void         *err_data)	// I - Error callback data
 {
-  TTF_DEBUG("ttfCreateData(data=%p, datasize=%lu, idx=%u, err_cb=%p, err_data=%p)\n", data, (unsigned long)datasize, (unsigned)idx, err_cb, err_data);
+  TTF_DEBUG("ttfCreateData(data=%p, datasize=%lu, idx=%u, err_cb=%p, err_data=%p)\n", data, (unsigned long)datasize, (unsigned)idx, (void *)err_cb, err_data);
 
   // Range check input..
   if (!data || datasize == 0)
@@ -949,7 +949,7 @@ create_font(const char   *filename,	// I - Filename of `NULL`
   _ttf_off_post_t	post;		// PostScript table
 
 
-  TTF_DEBUG("create_font(filename=\"%s\", data=%p, datasize=%lu, idx=%u, err_cb=%p, err_data=%p)\n", filename, data, (unsigned long)datasize, (unsigned)idx, err_cb, err_data);
+  TTF_DEBUG("create_font(filename=\"%s\", data=%p, datasize=%lu, idx=%u, err_cb=%p, err_data=%p)\n", filename, data, (unsigned long)datasize, (unsigned)idx, (void *)err_cb, err_data);
 
   // Allocate memory...
   if ((font = (ttf_t *)calloc(1, sizeof(ttf_t))) == NULL)