[gs-commits] mupdf 1.16.1.62 Avoid signedness issues for pointer compa

commit 006110bb4cd9b97cb6d96022a78b34b8acfbba43
Author: Sebastian Rasmussen <[email protected]>
Date:   Fri Sep 27 17:56:22 2019 +0200

    Avoid signedness issues for pointer comparisons.

diff --git a/source/fitz/load-tiff.c b/source/fitz/load-tiff.c
index 9376c22..b13f389 100644
--- a/source/fitz/load-tiff.c
+++ b/source/fitz/load-tiff.c
@@ -882,7 +882,7 @@ tiff_read_tag(fz_context *ctx, struct tiff *tiff, unsigned offset)
 
 	case JPEGTables:
 		/* Check both value and value + count to allow for overflow */
-		if (value > tiff->ep - tiff->bp || value + count > tiff->ep - tiff->bp)
+		if (value > (size_t)(tiff->ep - tiff->bp) || value + count > (size_t)(tiff->ep - tiff->bp))
 			fz_throw(ctx, FZ_ERROR_GENERIC, "TIFF JPEG tables out of range");
 		tiff->jpegtables = tiff->bp + value;
 		tiff->jpegtableslen = count;
diff --git a/source/fitz/output.c b/source/fitz/output.c
index acfc0e4..0d09e2a 100644
--- a/source/fitz/output.c
+++ b/source/fitz/output.c
@@ -403,7 +403,7 @@ fz_write_data(fz_context *ctx, fz_output *out, const void *data_, size_t size)
 
 	if (out->bp)
 	{
-		if (size >= out->ep - out->bp) /* too large for buffer */
+		if (size >= (size_t) (out->ep - out->bp)) /* too large for buffer */
 		{
 			if (out->wp > out->bp)
 			{
diff --git a/source/fitz/string.c b/source/fitz/string.c
index 488cbbb..c1c30e2 100644
--- a/source/fitz/string.c
+++ b/source/fitz/string.c
@@ -22,7 +22,7 @@ size_t
 fz_strnlen(const char *s, size_t n)
 {
 	const char *p = memchr(s, 0, n);
-	return p ? p - s : n;
+	return p ? (size_t) (p - s) : n;
 }
 
 int
@@ -735,7 +735,7 @@ static char *twoway_memmem(const unsigned char *h, const unsigned char *z, const
 	/* Search loop */
 	for (;;) {
 		/* If remainder of haystack is shorter than needle, done */
-		if (z-h < l) return 0;
+		if ((size_t)(z-h) < l) return 0;
 
 		/* Check last byte first; advance by shift on mismatch */
 		if (BITOP(byteset, h[l-1], &)) {
diff --git a/source/html/epub-doc.c b/source/html/epub-doc.c
index 44fb3fc..423ca02 100644
--- a/source/html/epub-doc.c
+++ b/source/html/epub-doc.c
@@ -50,7 +50,7 @@ epub_resolve_link(fz_context *ctx, fz_document *doc_, const char *dest, float *x
 	epub_chapter *ch;
 
 	const char *s = strchr(dest, '#');
-	size_t n = s ? s - dest : strlen(dest);
+	size_t n = s ? (size_t)(s - dest) : strlen(dest);
 	if (s && s[1] == 0)
 		s = NULL;
 

http://git.ghostscript.com/?p=mupdf.git;a=commit;h=006110bb4cd9b97cb6d96022a78b34b8acfbba43

--
MuPDF library
Artifex Software, Inc.