lzx_write_compressed_tree(), lzx_read_code_lens(): Specify signed char

[wimlib] / src / lzx-compress.c

diff --git a/src/lzx-compress.c b/src/lzx-compress.c
index a8e0340138e791d15dbf5e22a4e9eaff681d6e81..61c484318179a383b2f5f1af4dc9bc58b10d67cd 100644 (file)
--- a/src/lzx-compress.c
+++ b/src/lzx-compress.c
@@ -425,7 +425,7 @@ lzx_write_compressed_tree(struct output_bitstream *out,
        unsigned i;
        unsigned len_in_run;
        unsigned additional_bits;
-       char delta;
+       signed char delta;
        u8 pretree_sym;
 
        ZERO_ARRAY(pretree_freqs);
@@ -502,7 +502,7 @@ lzx_write_compressed_tree(struct output_bitstream *out,
                         * */
                        while (cur_run_len >= 4) {
                                additional_bits = (cur_run_len > 4);
-                               delta = -(char)len_in_run;
+                               delta = -(signed char)len_in_run;
                                if (delta < 0)
                                        delta += 17;
                                pretree_freqs[19]++;
@@ -518,7 +518,7 @@ lzx_write_compressed_tree(struct output_bitstream *out,
                 * as a difference from the length of that codeword in the
                 * previous tree. */
                while (cur_run_len--) {
-                       delta = -(char)len_in_run;
+                       delta = -(signed char)len_in_run;
                        if (delta < 0)
                                delta += 17;