1 files changed, 3 insertions, 0 deletions
diff --git a/proto.h b/proto.h
index da4a1531cf..aad0de618d 100644
--- a/proto.h
+++ b/proto.h
@@ -441,6 +441,9 @@ PERL_CALLCONV bool	Perl_do_exec3(pTHX_ const char* cmd, int fd, int do_report)
 
 #endif
 PERL_CALLCONV void	Perl_do_execfree(pTHX);
+#ifdef PERL_IN_DOIO_C
+STATIC void	S_exec_failed(pTHX_ const char *cmd, int fd, int do_report);
+#endif
 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
 PERL_CALLCONV I32	Perl_do_ipcctl(pTHX_ I32 optype, SV** mark, SV** sp)
 			__attribute__nonnull__(pTHX_2)