xz: Fix some of the warnings from -Wsign-conversion.

src/xz/args.c

@@ -218,7 +218,7 @@ parse_real(args_info *args, int argc, char **argv)
 		// Compression preset (also for decompression if --format=raw)
 		case '0': case '1': case '2': case '3': case '4':
 		case '5': case '6': case '7': case '8': case '9':
-			coder_set_preset(c - '0');
+			coder_set_preset((uint32_t)(c - '0'));
 			break;
 
 		// --memlimit-compress
@@ -683,7 +683,7 @@ args_parse(args_info *args, int argc, char **argv)
 		// We got at least one filename from the command line, or
 		// --files or --files0 was specified.
 		args->arg_names = argv + optind;
-		args->arg_count = argc - optind;
+		args->arg_count = (unsigned int)(argc - optind);
 	}
 
 	return;

src/xz/coder.c

@@ -905,8 +905,8 @@ coder_run(const char *filename)
 				const bool is_passthru = init_ret
 						== CODER_INIT_PASSTHRU;
 				const uint64_t in_size
-						= pair->src_st.st_size <= 0
-						? 0 : pair->src_st.st_size;
+					= pair->src_st.st_size <= 0
+					? 0 : (uint64_t)(pair->src_st.st_size);
 				message_progress_start(&strm,
 						is_passthru, in_size);
 

src/xz/file_io.c

@@ -360,13 +360,14 @@ io_copy_attrs(const file_pair *pair)
 	// Try changing the owner of the file. If we aren't root or the owner
 	// isn't already us, fchown() probably doesn't succeed. We warn
 	// about failing fchown() only if we are root.
-	if (fchown(pair->dest_fd, pair->src_st.st_uid, -1) && warn_fchown)
+	if (fchown(pair->dest_fd, pair->src_st.st_uid, (gid_t)(-1))
+			&& warn_fchown)
 		message_warning(_("%s: Cannot set the file owner: %s"),
 				pair->dest_name, strerror(errno));
 
 	mode_t mode;
 
-	if (fchown(pair->dest_fd, -1, pair->src_st.st_gid)) {
+	if (fchown(pair->dest_fd, (uid_t)(-1), pair->src_st.st_gid)) {
 		message_warning(_("%s: Cannot set the file group: %s"),
 				pair->dest_name, strerror(errno));
 		// We can still safely copy some additional permissions:

src/xz/message.c

@@ -440,8 +440,8 @@ progress_remaining(uint64_t in_pos, uint64_t elapsed)
 	// Calculate the estimate. Don't give an estimate of zero seconds,
 	// since it is possible that all the input has been already passed
 	// to the library, but there is still quite a bit of output pending.
-	uint32_t remaining = (double)(expected_in_size - in_pos)
-			* ((double)(elapsed) / 1000.0) / (double)(in_pos);
+	uint32_t remaining = (uint32_t)((double)(expected_in_size - in_pos)
+			* ((double)(elapsed) / 1000.0) / (double)(in_pos));
 	if (remaining < 1)
 		remaining = 1;
 

src/xz/mytime.c

@@ -39,11 +39,11 @@ mytime_now(void)
 	while (clock_gettime(clk_id, &tv))
 		clk_id = CLOCK_REALTIME;
 
-	return (uint64_t)(tv.tv_sec) * UINT64_C(1000) + tv.tv_nsec / 1000000;
+	return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_nsec / 1000000);
 #else
 	struct timeval tv;
 	gettimeofday(&tv, NULL);
-	return (uint64_t)(tv.tv_sec) * UINT64_C(1000) + tv.tv_usec / 1000;
+	return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_usec / 1000);
 #endif
 }
 

src/xz/options.c

@@ -258,7 +258,7 @@ set_lzma(void *options, unsigned key, uint64_t value, const char *valuestr)
 		if (valuestr[0] < '0' || valuestr[0] > '9')
 			error_lzma_preset(valuestr);
 
-		uint32_t preset = valuestr[0] - '0';
+		uint32_t preset = (uint32_t)(valuestr[0] - '0');
 
 		// Currently only "e" is supported as a modifier,
 		// so keep this simple for now.

src/xz/util.c

@@ -79,7 +79,7 @@ str_to_uint64(const char *name, const char *value, uint64_t min, uint64_t max)
 		result *= 10;
 
 		// Another overflow check
-		const uint32_t add = *value - '0';
+		const uint32_t add = (uint32_t)(*value - '0');
 		if (UINT64_MAX - add < result)
 			goto error;
 
@@ -243,7 +243,7 @@ my_snprintf(char **pos, size_t *left, const char *fmt, ...)
 		*left = 0;
 	} else {
 		*pos += len;
-		*left -= len;
+		*left -= (size_t)(len);
 	}
 
 	return;