[PATCH] Fix C++ build for Cygwin

[Jon Turney <jon.turney@dronecode.org.uk>]

gdb/ChangeLog:

2016-06-02  Jon Turney  <jon.turney@dronecode.org.uk>

	* windows-nat.c (handle_output_debug_string): return type of
	gdb_signal_from_host() is gdb_signal, not an int.
	(windows_get_exec_module_filename): Add pointer casts for C++.

gdb/gdbserver/ChangeLog:

2016-06-02  Jon Turney  <jon.turney@dronecode.org.uk>

	* win32-low.c (win32_create_inferior): Add pointer casts for C++.
---
 gdb/ChangeLog             | 6 ++++++
 gdb/gdbserver/ChangeLog   | 4 ++++
 gdb/gdbserver/win32-low.c | 4 ++--
 gdb/windows-nat.c         | 4 ++--
 4 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/gdb/gdbserver/win32-low.c b/gdb/gdbserver/win32-low.c
index e60be5a..70abfcd 100644
--- a/gdb/gdbserver/win32-low.c
+++ b/gdb/gdbserver/win32-low.c
@@ -642,8 +642,8 @@ win32_create_inferior (char *program, char **program_args)
   if (path_ptr)
     {
       int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0);
-      orig_path = alloca (strlen (path_ptr) + 1);
-      new_path = alloca (size);
+      orig_path = (char *) alloca (strlen (path_ptr) + 1);
+      new_path = (char *) alloca (size);
       strcpy (orig_path, path_ptr);
       cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size);
       setenv ("PATH", new_path, 1);
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index 2e8a777..149403a 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -864,7 +864,7 @@ handle_output_debug_string (struct target_waitstatus *ourstatus)
 	 to treat this like a real signal.  */
       char *p;
       int sig = strtol (s + sizeof (_CYGWIN_SIGNAL_STRING) - 1, &p, 0);
-      int gotasig = gdb_signal_from_host (sig);
+      gdb_signal gotasig = gdb_signal_from_host (sig);
 
       ourstatus->value.sig = gotasig;
       if (gotasig)
@@ -1894,7 +1894,7 @@ windows_get_exec_module_filename (char *exe_name_ret, size_t exe_name_max_len)
     /* Cygwin prefers that the path be in /x/y/z format, so extract
        the filename into a temporary buffer first, and then convert it
        to POSIX format into the destination buffer.  */
-    cygwin_buf_t *pathbuf = alloca (exe_name_max_len * sizeof (cygwin_buf_t));
+    cygwin_buf_t *pathbuf = (cygwin_buf_t *) alloca (exe_name_max_len * sizeof (cygwin_buf_t));
 
     len = GetModuleFileNameEx (current_process_handle,
 			       dh_buf, pathbuf, exe_name_max_len);
-- 
2.8.3