From d13b9f20d1dc3613cf850eeb9b5627a0cdec5c4e Mon Sep 17 00:00:00 2001
From: Cheng Shao <cheng.shao@tweag.io>
Date: Wed, 3 Nov 2021 13:43:46 +0000
Subject: base: use `CUIntPtr` instead of `Ptr ()` as the autoconf detected
 Haskell type for C pointers

When autoconf detects a C pointer type, we used to specify `Ptr ()` as
the Haskell type. This doesn't work in some cases, e.g. in `wasi-libc`,
`clockid_t` is a pointer type, but we expected `CClockId` to be an
integral type, and `Ptr ()` lacks various integral type instances.
---
 libraries/base/aclocal.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/base/aclocal.m4 b/libraries/base/aclocal.m4
index 573c635ea2..190e2b496f 100644
--- a/libraries/base/aclocal.m4
+++ b/libraries/base/aclocal.m4
@@ -154,7 +154,7 @@ AC_DEFUN([FPTOOLS_CHECK_HTYPE_ELSE],[
 
             if test "$HTYPE_IS_POINTER" = yes
             then
-                AC_CV_NAME="Ptr ()"
+                AC_CV_NAME="CUIntPtr"
             else
                 FP_COMPUTE_INT([HTYPE_IS_FLOAT],[sizeof($1) == sizeof(float)],
                                [FPTOOLS_HTYPE_INCLUDES],
-- 
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