win32: some mingw32/mingw64 warning and compilation fixes.

configure.ac

@@ -50,6 +50,8 @@ case "${host_os}" in
   *mingw32*)
     DLL_LDFLAGS="-Wl,-l,imagehlp" # Trick libtool here
     WINSOCK2_LIBS="-lws2_32"
+    # This one is necessary if we want inet_pton() with mingw
+    AC_DEFINE(_WIN32_WINNT, 0x600, [Define the Windows version to Vista])
     ac_cv_func_recv=yes
     ac_cv_func_recvfrom=yes
     ac_cv_func_socket=yes

msvc/config.h

@@ -151,6 +151,7 @@
 #define RECV_T int
 #define SONAME "libzzuf.dll"
 #define STDC_HEADERS 1
+/* #undef _WIN32_WINNT */
 /* #undef __func__ */
 
 /* Fucking Visual Studio should just shut the fuck up with this fucking

src/common/fd.c

@@ -32,7 +32,7 @@
 #   endif
 #endif
 #if _WIN32
-#   include <Windows.h>
+#   include <windows.h>
 #endif
 #include <string.h>
 #include <math.h>

src/libzzuf/debug.c

@@ -85,11 +85,11 @@ void _zz_debug(char const *format, ...)
         if (buf[0] == '\0')
             return; /* if buf is empty, we don't bother to send it to zzuf */
 
-        /* FIXME: if len >= count, no null-terminator is appended, so we may erased the last character */
-        if (ret >= sizeof(buf))
-            buf[ret - 1] = '\n';
-        else
-            buf[ret++] = '\n';
+        /* If len >= count, no null-terminator is appended, so we need to
+         * erase the last character */
+        if (ret >= (int)sizeof(buf))
+            ret = (int)sizeof(buf) - 1;
+        buf[ret++] = '\n';
 
         EnterCriticalSection(&_zz_pipe_cs);
         WriteFile(dbg_hdl, buf, ret, &written, NULL);
@@ -115,9 +115,11 @@ void _zz_debug2(char const *format, ...)
         if (buf[0] == '\0')
             return; /* if buf is empty, we don't bother to send it to zzuf */
 
-        /* FIXME: if len >= count, no null-terminator is appended, so we may erased the last character */
-        if (ret >= sizeof(buf)) buf[ret - 1] = '\n';
-        else                    buf[ret++]   = '\n';
+        /* If len >= count, no null-terminator is appended, so we need to
+         * erase the last character */
+        if (ret >= (int)sizeof(buf))
+            ret = (int)sizeof(buf) - 1;
+        buf[ret++] = '\n';
 
         EnterCriticalSection(&_zz_pipe_cs);
         WriteFile(dbg_hdl, buf, ret, &written, NULL);

src/libzzuf/sys.c

@@ -183,12 +183,14 @@ static void make_jmp32(uint8_t *src, uint8_t *dst, uint8_t *code)
     *(uint32_t *)(code + 1) = (uint32_t)MK_JMP_JD(dst, src);
 }
 
+#ifdef _M_AMD64
 static void make_jmp64(uint8_t *dst, uint8_t *code)
 {
     memcpy(code, "\x48\xb8", 2);                /* MOV rAX, Iq */
-    *(uint64_t *)(code + 2) = (uint64_t)dst;
+    *(uintptr_t *)(code + 2) = (uintptr_t)dst;
     memcpy(code + 10, "\xff\xe0", 2);           /* JMP rAX */
 }
+#endif
 
 /* This function allocates and fills a trampoline for the function pointed by code. It also tries to handle some relocations. */
 static int make_trampoline(uint8_t *code, size_t patch_size, uint8_t **trampoline_buf, size_t *trampoline_size)

src/myfork.c

@@ -78,7 +78,6 @@ static int mypipe(int pipefd[2]);
 static int run_process(struct child *child, struct opts *, int[][2]);
 
 #if defined HAVE_WINDOWS_H
-static void rep32(uint8_t *buf, void *addr);
 static int dll_inject(PROCESS_INFORMATION *, char const *);
 static void *get_proc_address(void *, DWORD, char const *);
 #endif
@@ -343,8 +342,6 @@ static int run_process(struct child *child, struct opts *opts, int pipes[][2])
     return 0;
 
 #elif HAVE_WINDOWS_H
-    HANDLE pid = GetCurrentProcess();
-
     /* Inherit standard handles */
     STARTUPINFO sinfo;
     memset(&sinfo, 0, sizeof(sinfo));
@@ -359,7 +356,9 @@ static int run_process(struct child *child, struct opts *opts, int pipes[][2])
     for (int i = 0; child->newargv[i]; ++i)
         len += (int)strlen(child->newargv[i]) + 1;
     char *cmdline = malloc(len);
-    for (int i = 0, len = 0; child->newargv[i]; ++i)
+
+    len = 0;
+    for (int i = 0; child->newargv[i]; ++i)
     {
         strcpy(cmdline + len, child->newargv[i]);
         len += (int)strlen(child->newargv[i]) + 1;
@@ -378,14 +377,14 @@ static int run_process(struct child *child, struct opts *opts, int pipes[][2])
 
     if (!ret)
     {
-        LPTSTR buf;
+        LPTSTR tmp;
         DWORD err = GetLastError();
         FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
                       FORMAT_MESSAGE_FROM_SYSTEM     |
                       FORMAT_MESSAGE_IGNORE_INSERTS,
-                      NULL, err, 0, (LPTSTR)&buf, 0, NULL);
-        fprintf(stderr, "error launching `%s': %s\n", child->newargv[0], buf);
-        LocalFree(buf);
+                      NULL, err, 0, (LPTSTR)&tmp, 0, NULL);
+        fprintf(stderr, "error launching `%s': %s\n", child->newargv[0], tmp);
+        LocalFree(tmp);
         return -1;
     }
 
@@ -475,7 +474,6 @@ static int dll_inject(PROCESS_INFORMATION *pinfo, char const *lib)
     DWORD pid       = pinfo->dwProcessId;
     void *rldlib    = NULL;
     SIZE_T written  = 0;
-    DWORD old_prot  = 0;
 
     /* Payload */
     void *rpl       = NULL;

src/opts.h

@@ -15,7 +15,7 @@
  */
 
 #ifdef _WIN32
-#   include <Windows.h>
+#   include <windows.h>
 #endif
 
 struct opts

src/zzuf.c

@@ -119,7 +119,7 @@ static void usage(void);
     ((fd >= 0) && (FD_ISSET(fd, p_fdset)))
 
 #if defined _WIN32
-#   include <Windows.h>
+#   include <windows.h>
 #   include <fcntl.h> /* _O_RDWR */
 #   include <io.h> /* _open */
 static CRITICAL_SECTION _zz_pipe_cs;
@@ -980,14 +980,15 @@ static void clean_children(struct opts *opts)
 struct child_overlapped
 {
     OVERLAPPED overlapped;
-    char buf[BUFSIZ];
+    uint8_t buf[BUFSIZ];
     struct opts * opts;
     int child_no;
     int fd_no;
 };
 
 /* This callback is called when fuzzed applications write in fd out, err or debug */
-static void _stdcall read_child(DWORD err_code, DWORD nbr_of_bytes_transfered, LPOVERLAPPED overlapped)
+static void __stdcall read_child(DWORD err_code, DWORD nbr_of_bytes_transfered,
+                                 LPOVERLAPPED overlapped)
 {
     struct child_overlapped * co = (struct child_overlapped *)overlapped;