next afl-showmap fix attempt

TODO.md

@@ -7,7 +7,6 @@
  - afl-plot to support multiple plot_data
  - afl_custom_fuzz_splice_optin()
  - intel-pt tracer
- - https://github.com/zyingp/desockmulti ?
 
 ## Further down the road
 
@@ -18,9 +17,6 @@ afl-fuzz:
 llvm_mode:
  - add __sanitizer_cov_trace_cmp* support
 
-gcc_plugin:
- - (wait for submission then decide)
-
 qemu_mode:
  - non colliding instrumentation
  - rename qemu specific envs to AFL_QEMU (AFL_ENTRYPOINT, AFL_CODE_START/END,

src/afl-showmap.c

@@ -742,8 +742,10 @@ int main(int argc, char **argv_orig, char **envp) {
 
       case 'f':  // only in here to avoid a compiler warning for use_stdin
 
-        fsrv->use_stdin = 0;
         FATAL("Option -f is not supported in afl-showmap");
+        // currently not reached:
+        fsrv->use_stdin = 0;
+        fsrv->out_file = strdup(optarg);
 
         break;
 
@@ -1015,6 +1017,7 @@ int main(int argc, char **argv_orig, char **envp) {
         alloc_printf("%s/.afl-showmap-temp-%u", use_dir, (u32)getpid());
     unlink(stdin_file);
     atexit(at_exit_handler);
+    afl->fsrv.out_file = stdin_file;
     fsrv->out_fd = open(stdin_file, O_RDWR | O_CREAT | O_EXCL, 0600);
     if (fsrv->out_fd < 0) { PFATAL("Unable to create '%s'", out_file); }