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-rw-r--r--ext/digest/sha2/sha2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/digest/sha2/sha2.c b/ext/digest/sha2/sha2.c
index 31b5ff1690..24a57ded0d 100644
--- a/ext/digest/sha2/sha2.c
+++ b/ext/digest/sha2/sha2.c
@@ -67,7 +67,7 @@ typedef uint8_t sha2_byte; /* Exactly 1 byte */
typedef uint32_t sha2_word32; /* Exactly 4 bytes */
typedef uint64_t sha2_word64; /* Exactly 8 bytes */
-#if defined(__GNUC__)
+#if defined(__GNUC__) || defined(_HPUX_SOURCE)
#define ULL(number) number##ULL
#else
#define ULL(number) (uint64_t)(number)