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-rw-r--r--src/afl-fuzz-mutators.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/afl-fuzz-mutators.c b/src/afl-fuzz-mutators.c
index e78e2dc4..9407adfb 100644
--- a/src/afl-fuzz-mutators.c
+++ b/src/afl-fuzz-mutators.c
@@ -428,7 +428,7 @@ u8 trim_case_custom(afl_state_t *afl, struct queue_entry *q, u8 *in_buf,
 
     if (likely(retlen)) {
 
-      retlen = write_to_testcase(afl, retbuf, retlen, 0);
+      retlen = write_to_testcase(afl, (void **)&retbuf, retlen, 0);
 
       fault = fuzz_run_target(afl, &afl->fsrv, afl->fsrv.exec_tmout);
       ++afl->trim_execs;
@@ -460,6 +460,8 @@ u8 trim_case_custom(afl_state_t *afl, struct queue_entry *q, u8 *in_buf,
       }
 
       out_len = retlen;
+      // TODO are we sure that retbuf fits into out_buf if retbuf can actually
+      // increase in size?
       memcpy(out_buf, retbuf, retlen);
 
       /* Tell the custom mutator that the trimming was successful */