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-rw-r--r--includes/mkDerivedConstants.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/includes/mkDerivedConstants.c b/includes/mkDerivedConstants.c
index f87db37deb..2fe99b6ba5 100644
--- a/includes/mkDerivedConstants.c
+++ b/includes/mkDerivedConstants.c
@@ -33,12 +33,18 @@
#define OFFSET(s_type, field) ((size_t)&(((s_type*)0)->field))
+#ifdef mingw32_HOST_OS
+#define SIZET_FMT "d"
+#else
+#define SIZET_FMT "zd"
+#endif
+
#if defined(GEN_HASKELL)
#define def_offset(str, offset) \
- printf("oFFSET_" str " = %zd::Int\n", offset);
+ printf("oFFSET_" str " = %" SIZET_FMT "::Int\n", offset);
#else
#define def_offset(str, offset) \
- printf("#define OFFSET_" str " %zd\n", offset);
+ printf("#define OFFSET_" str " %" SIZET_FMT "\n", offset);
#endif
#if defined(GEN_HASKELL)