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Don't crash for unset out_file (fixed #562)

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Dominik Maier
2020-10-29 11:05:07 +01:00
parent abac876b3a
commit 9347ad49b8
1 changed files with 6 additions and 1 deletions
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7
src/afl-forkserver.c
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@ -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);