fixed minor inconsistencies, reenabled warnings

GNUmakefile

@@ -98,7 +98,7 @@ ifneq "$(shell uname -m)" "x86_64"
 endif
 
 CFLAGS     ?= -O3 -funroll-loops $(CFLAGS_OPT)
-override CFLAGS += -g -Wno-pointer-sign \
+override CFLAGS += -g -Wno-pointer-sign -Wno-variadic-macros -Wall -Wextra -Wpointer-arith \
 			  -I include/ -DAFL_PATH=\"$(HELPER_PATH)\" \
 			  -DBIN_PATH=\"$(BIN_PATH)\" -DDOC_PATH=\"$(DOC_PATH)\"
 
@@ -198,6 +198,7 @@ else
 endif
 
 ifneq "$(filter Linux GNU%,$(shell uname))" ""
+  override CFLAGS += -D_FORTIFY_SOURCE=2
   LDFLAGS += -ldl -lrt
 endif
 

include/debug.h

@@ -29,10 +29,15 @@
 #include "config.h"
 
 /* __FUNCTION__ is non-iso */
-#ifdef __func__
-  #define __FUNCTION__ __func__
+#ifndef __FUNCTION__
+  #ifdef __func__
+    #define __FUNCTION__ __func__
+  #else
+    #define __FUNCTION__ "unknown_func"
+  #endif
 #endif
 
+
 /*******************
  * Terminal colors *
  *******************/

src/afl-fuzz-cmplog.c

@@ -29,10 +29,6 @@
 #include "afl-fuzz.h"
 #include "cmplog.h"
 
-typedef struct cmplog_data {
-
-} cmplog_data_t;
-
 void cmplog_exec_child(afl_forkserver_t *fsrv, char **argv) {
 
   setenv("___AFL_EINS_ZWEI_POLIZEI___", "1", 1);

src/afl-fuzz-run.c

@@ -138,7 +138,7 @@ void write_to_testcase(afl_state_t *afl, void *mem, u32 len) {
 
 /* The same, but with an adjustable gap. Used for trimming. */
 
-static void write_with_gap(afl_state_t *afl, void *mem, u32 len, u32 skip_at,
+static void write_with_gap(afl_state_t *afl, u8 *mem, u32 len, u32 skip_at,
                            u32 skip_len) {
 
   s32 fd = afl->fsrv.out_fd;

src/afl-fuzz.c

@@ -289,8 +289,9 @@ int main(int argc, char **argv_orig, char **envp) {
 
         if (afl->cpu_to_bind != -1) FATAL("Multiple -b options not supported");
 
-        if (sscanf(optarg, "%u", &afl->cpu_to_bind) < 0 || optarg[0] == '-')
+        if (sscanf(optarg, "%d", &afl->cpu_to_bind) < 0) {
           FATAL("Bad syntax used for -b");
+        }
 
         break;