pa.h (RETURN_IN_MEMORY): Return types with a size that is varable or larger than…

pa.h (RETURN_IN_MEMORY): Return types with a size that is varable or larger than an integer in memory.

	* pa.h (RETURN_IN_MEMORY): Return types with a size that is varable
	or larger than an integer in memory.

From-SVN: r44981

gcc/ChangeLog

+2001-08-17  John David Anglin  <dave@hiauly1.hia.nrc.ca>
+
+	* pa.h (RETURN_IN_MEMORY): Return types with a size that is varable
+	or larger than an integer in memory.
+
 2001-08-17  Zack Weinberg  <zackw@panix.com>
 
 	* system.h: Forward-declare struct rtx_def, struct rtvec_def,

gcc/config/pa/pa.h

@@ -518,9 +518,11 @@ extern struct rtx_def *hppa_pic_save_rtx PARAMS ((void));
 #define DEFAULT_PCC_STRUCT_RETURN 0
 
 /* SOM ABI says that objects larger than 64 bits are returned in memory.
-   PA64 ABI says that objects larger than 128 bits are returned in memory. */
+   PA64 ABI says that objects larger than 128 bits are returned in memory.
+   Note that int_size_in_bytes can return -1 if the size is variable
+   or larger than an integer.  */
 #define RETURN_IN_MEMORY(TYPE)	\
-  (TARGET_64BIT ? int_size_in_bytes (TYPE) > 16 : int_size_in_bytes (TYPE) > 8)
+  ((unsigned HOST_WIDE_INT) int_size_in_bytes (TYPE) > (TARGET_64BIT ? 16 : 8))
 
 /* Register in which address to store a structure value
    is passed to a function.  */