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-rw-r--r--mrbgems/mruby-io/src/file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mrbgems/mruby-io/src/file.c b/mrbgems/mruby-io/src/file.c
index 0f7674d77..03757919d 100644
--- a/mrbgems/mruby-io/src/file.c
+++ b/mrbgems/mruby-io/src/file.c
@@ -370,7 +370,7 @@ mrb_file_s_readlink(mrb_state *mrb, mrb_value klass) {
mrb_get_args(mrb, "z", &path);
buf = (char *)mrb_malloc(mrb, bufsize);
- while ((rc = readlink(path, buf, bufsize)) == bufsize && rc != -1) {
+ while ((rc = readlink(path, buf, bufsize)) == (ssize_t)bufsize && rc != -1) {
bufsize *= 2;
buf = (char *)mrb_realloc(mrb, buf, bufsize);
}