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-rw-r--r--tcg/tcg.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/tcg/tcg.h b/tcg/tcg.h
index a3fb88cd04..4f4b1fa4d2 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -147,9 +147,8 @@ typedef enum TCGOpcode {
#define tcg_regset_not(d, a) (d) = ~(a)
#ifndef TCG_TARGET_INSN_UNIT_SIZE
-#define TCG_TARGET_INSN_UNIT_SIZE 1
-#endif
-#if TCG_TARGET_INSN_UNIT_SIZE == 1
+# error "Missing TCG_TARGET_INSN_UNIT_SIZE"
+#elif TCG_TARGET_INSN_UNIT_SIZE == 1
typedef uint8_t tcg_insn_unit;
#elif TCG_TARGET_INSN_UNIT_SIZE == 2
typedef uint16_t tcg_insn_unit;