Fix compilation warning in _ctypes module on Window

amauryfa · amauryfa · commit 20f11fe43c47 · 2010-10-17T08:34:22.000Z
diff --git a/Modules/_ctypes/libffi_msvc/ffi.c b/Modules/_ctypes/libffi_msvc/ffi.c
@@ -110,7 +110,7 @@ void ffi_prep_args(char *stack, extended_cif *ecif)
       argp += z;
     }
 
-  if (argp - stack > ecif->cif->bytes) 
+  if (argp >= stack && (unsigned)(argp - stack) > ecif->cif->bytes) 
     {
       Py_FatalError("FFI BUG: not enough stack space for arguments");
     }

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ void ffi_prep_args(char stack, extended_cif ecif)`
`110`	`110`	`argp += z;`
`111`	`111`	`}`
`112`	`112`
`113`		`- if (argp - stack > ecif->cif->bytes)`
	`113`	`+ if (argp >= stack && (unsigned)(argp - stack) > ecif->cif->bytes)`
`114`	`114`	`{`
`115`	`115`	`Py_FatalError("FFI BUG: not enough stack space for arguments");`
`116`	`116`	`}`