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-rw-r--r--warnings.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/warnings.h b/warnings.h
index 423a21a4c2..9c84c25a72 100644
--- a/warnings.h
+++ b/warnings.h
@@ -92,8 +92,8 @@
#define isWARNf_on(c,x) (IsSet((U8 *)(c + 1), 2*(x)+1))
#define DUP_WARNINGS(p) \
- specialWARN(p) ? (p) \
- : CopyD(p, PerlMemShared_malloc(sizeof(*p)+*p), sizeof(*p)+*p, char)
+ (STRLEN*)(specialWARN(p) ? (p) \
+ : CopyD(p, PerlMemShared_malloc(sizeof(*p)+*p), sizeof(*p)+*p, char))
#define ckWARN(w) Perl_ckwarn(aTHX_ packWARN(w))
#define ckWARN2(w1,w2) Perl_ckwarn(aTHX_ packWARN2(w1,w2))