Merge branch 'ps/build-sign-compare' into seen

Start working to make the codebase buildable with -Wsign-compare.

* ps/build-sign-compare:
  sign-compare: 32-bit support

Author: gitster

csum-file.c

@@ -23,7 +23,7 @@ static void verify_buffer_or_die(struct hashfile *f,
 
 	if (ret < 0)
 		die_errno("%s: sha1 file read error", f->name);
-	if (ret != count)
+	if ((size_t)ret != (size_t)count)
 		die("%s: sha1 file truncated", f->name);
 	if (memcmp(buf, f->check_buffer, count))
 		die("sha1 file '%s' validation error", f->name);

git.c

@@ -1,4 +1,5 @@
 #define USE_THE_REPOSITORY_VARIABLE
+#define DISABLE_SIGN_COMPARE_WARNINGS
 
 #include "builtin.h"
 #include "config.h"

oss-fuzz/fuzz-parse-attr-line.c

@@ -1,3 +1,5 @@
+#define DISABLE_SIGN_COMPARE_WARNINGS
+
 #include "git-compat-util.h"
 #include <stddef.h>
 #include <stdlib.h>

pkt-line.c

@@ -360,7 +360,7 @@ static int get_packet_data(int fd, char **src_buf, size_t *src_size,
 	}
 
 	/* And complain if we didn't get enough bytes to satisfy the read. */
-	if (ret != size) {
+	if ((size_t)ret != (size_t)size) {
 		if (options & PACKET_READ_GENTLE_ON_EOF)
 			return -1;