successive failures of "set print <foo>" could cause double-free

Bug #2312
gnuplot · Sep 9, 2020 · 052cbd1 · 052cbd1
1 parent 160d751
commit 052cbd1
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/command.c b/src/command.c
@@ -1914,6 +1914,7 @@ print_set_output(char *name, TBOOLEAN datablock, TBOOLEAN append_p)
 #endif
 	    if (0 > fclose(print_out))
 		perror(print_out_name);
+	print_out = stderr;
     }
 
     free(print_out_name);