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-rw-r--r--warnings.pl4
1 files changed, 2 insertions, 2 deletions
diff --git a/warnings.pl b/warnings.pl
index 0cb5bbd660..8d8913430f 100644
--- a/warnings.pl
+++ b/warnings.pl
@@ -332,8 +332,8 @@ print WARN <<'EOM';
#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))