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-rw-r--r--include/u8c/u32free.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/u8c/u32free.h b/include/u8c/u32free.h
index 8a12c97..fd431e0 100644
--- a/include/u8c/u32free.h
+++ b/include/u8c/u32free.h
@@ -16,6 +16,7 @@
/* Format */
# if !defined(u8c_u32free)
# if defined(__cplusplus)
+# include <cstdint>
# include <cstdlib>
# define u8c_u32free(u32) (std::free(const_cast<uint_least32_t *>(u32)))
# else