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-rw-r--r--ext/XS/APItest/APItest.xs2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/XS/APItest/APItest.xs b/ext/XS/APItest/APItest.xs
index 085198ace4..1e8ea35d01 100644
--- a/ext/XS/APItest/APItest.xs
+++ b/ext/XS/APItest/APItest.xs
@@ -25,7 +25,7 @@ void
print_long_double()
CODE:
#ifdef HAS_LONG_DOUBLE
-# if LONG_DOUBLESIZE > DOUBLESIZE
+# if defined(PERL_PRIfldbl) && (LONG_DOUBLESIZE > DOUBLESIZE)
long double val = 7.0;
printf("%5.3" PERL_PRIfldbl "\n",val);
# else