Always use unsigned char * for data buffers

Before this commit I was inconsistently using one of void *, char *
and uint8_t *.

1 files changed, 2 insertions, 2 deletions

diff --git a/test/101_cocsep_transform_invariant/cocsep_transform_invariant.c b/test/101_cocsep_transform_invariant/cocsep_transform_invariant.c
index 853586a..b5a74b0 100644
--- a/test/101_cocsep_transform_invariant/cocsep_transform_invariant.c
+++ b/test/101_cocsep_transform_invariant/cocsep_transform_invariant.c
@@ -1,12 +1,12 @@
 #include "../test.h"
 
-size_t gendata_cocsep(void *, uint64_t *, cube_t *);
+size_t gendata_cocsep(unsigned char *, uint64_t *, cube_t *);
 cube_t transform(cube_t, uint8_t);
 int64_t coord_cocsep(cube_t);
 
 void run(void) {
         uint8_t t;
-        char buf[2000000];
+        unsigned char buf[2000000];
         uint32_t *cocsepdata;
         uint64_t selfsim[COCSEP_CLASSES];
         int64_t coord, tcoord;