1 files changed, 10 insertions, 8 deletions
diff --git a/eval.c b/eval.c
index 02db227752..b09221617a 100644
--- a/eval.c
+++ b/eval.c
@@ -35,17 +35,19 @@
 #  endif
 # endif /* atarist */
 #else
-# if defined(HAVE_ALLOCA_H)
+# ifdef HAVE_ALLOCA_H
 #  include <alloca.h>
-# elif !defined(alloca)
-char *alloca();
-# endif
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+void *alloca ();
+#   endif
+#  endif /* AIX */
+# endif /* HAVE_ALLOCA_H */
 #endif /* __GNUC__ */
 
-#ifdef _AIX
-#pragma alloca
-#endif
-
 #ifdef HAVE_STDARG_PROTOTYPES
 #include <stdarg.h>
 #define va_init_list(a,b) va_start(a,b)