The Windows HANDLE type, despite being a `void *', does not actually

[sgt/putty] / windows / winpgntc.c

diff --git a/windows/winpgntc.c b/windows/winpgntc.c
index 2259e6a..033fd5f 100644 (file)
--- a/windows/winpgntc.c
+++ b/windows/winpgntc.c
@@ -85,7 +85,7 @@ int agent_query(void *in, int inlen, void **out, int *outlen,
     mapname = dupprintf("PageantRequest%08x", (unsigned)GetCurrentThreadId());
     filemap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
                                0, AGENT_MAX_MSGLEN, mapname);
-    if (!filemap)
+    if (filemap == NULL || filemap == INVALID_HANDLE_VALUE)
        return 1;                      /* *out == NULL, so failure */
     p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0);
     memcpy(p, in, inlen);