ExternalVendorCode/AFLplusplus
1
0
Fork 0
mirror of https://github.com/AFLplusplus/AFLplusplus.git synced 2025-06-13 02:28:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #458 from h1994st/dev

Browse Source 
Allow the custom trim function to return 0 bytes
This commit is contained in:
van Hauser
2020-07-20 10:19:14 +02:00
committed by GitHub
parent 0da0b5cba0 67d2e6319b
commit f2d9b0096e
1 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/afl-fuzz-mutators.c
View File

@ -286,6 +286,15 @@ u8 trim_case_custom(afl_state_t *afl, struct queue_entry *q, u8 *in_buf,
"Trimmed data returned by custom mutator is larger than original " "Trimmed data returned by custom mutator is larger than original "
"data"); "data");
} else if (unlikely(retlen == 0)) {
/* Do not run the empty test case on the target. To keep the custom
trimming function running, we simply treat the empty test case as an
unsuccessful trimming and skip it, instead of aborting the trimming. */
++afl->trim_execs;
goto unsuccessful_trimming;
} }
write_to_testcase(afl, retbuf, retlen); write_to_testcase(afl, retbuf, retlen);
@ -325,6 +334,8 @@ u8 trim_case_custom(afl_state_t *afl, struct queue_entry *q, u8 *in_buf,
} else { } else {
unsuccessful_trimming:
/* Tell the custom mutator that the trimming was unsuccessful */ /* Tell the custom mutator that the trimming was unsuccessful */
afl->stage_cur = mutator->afl_custom_post_trim(mutator->data, 0); afl->stage_cur = mutator->afl_custom_post_trim(mutator->data, 0);
if (unlikely(afl->stage_cur < 0)) { if (unlikely(afl->stage_cur < 0)) {