Bug in afl_collect.py fixed that prevented other tools from starting

if gdb executable is not present (reported by Henri Salo).

afl_utils/afl_collect.py

@@ -40,16 +40,19 @@
 
 # Path to gdb binary
 gdb_binary = shutil.which("gdb")
-if gdb_binary is None:
-    print_err("gdb binary not found!")
-    sys.exit(1)
 
 
 # afl-collect database table spec
 db_table_spec = """`Sample` TEXT PRIMARY KEY NOT NULL, `Classification` TEXT NOT NULL,
 `Classification_Description` TEXT NOT NULL, `Hash` TEXT, `User_Comment` TEXT"""
 
 
+def check_gdb():
+    if gdb_binary is None:
+        print_err("gdb binary not found!")
+        sys.exit(1)
+
+
 def show_info():
     print(clr.CYA + "afl-collect " + clr.BRI + "%s" % afl_utils.__version__ + clr.RST + " by %s" % afl_utils.__author__)
     print("Crash sample collection and processing utility for afl-fuzz.")
@@ -511,4 +514,5 @@ def main(argv):
 
 
 if __name__ == "__main__":
+    check_gdb()
     main(sys.argv)

docs/CHANGELOG.md

@@ -6,6 +6,8 @@ Version 1.34a
     Denis Kasak).
   - Improved bug fix for #34 in afl-multicore (suggested by Bhargava
     Shastry).
+  - Bug in afl_collect.py fixed that prevented other tools from starting
+    if gdb executable is not present (reported by Henri Salo).
 
 Version 1.33a