diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/afl-forkserver.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/afl-forkserver.c b/src/afl-forkserver.c index df300950..04195d00 100644 --- a/src/afl-forkserver.c +++ b/src/afl-forkserver.c @@ -968,7 +968,7 @@ void afl_fsrv_write_to_testcase(afl_forkserver_t *fsrv, u8 *buf, size_t len) { s32 fd = fsrv->out_fd; - if (!fsrv->use_stdin) { + if (!fsrv->use_stdin && fsrv->out_file) { if (fsrv->no_unlink) { @@ -983,6 +983,11 @@ void afl_fsrv_write_to_testcase(afl_forkserver_t *fsrv, u8 *buf, size_t len) { if (fd < 0) { PFATAL("Unable to create '%s'", fsrv->out_file); } + } else if (unlikely(!fd)) { + + // We should never have stdin as fd here, 0 is likely unset. + FATAL("Nowhere to write output to (neither out_fd nor out_file set)"); + } else { lseek(fd, 0, SEEK_SET); |