diff mbox series

eal: fix rte_memcpy build on ppc with gcc 9.3

Message ID 20200504174552.6700-1-drc@linux.vnet.ibm.com (mailing list archive)
State Superseded, archived
Headers
Series eal: fix rte_memcpy build on ppc with gcc 9.3 |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-nxp-Performance success Performance Testing PASS
ci/travis-robot warning Travis build: failed
ci/iol-mellanox-Performance success Performance Testing PASS
ci/Intel-compilation success Compilation OK
ci/iol-testing success Testing PASS

Commit Message

David Christensen May 4, 2020, 5:45 p.m. UTC 
  Building DPDK on Ubuntu 20.04 with GCC 9.3.0 results in a "subscript is
outside array bounds" message in rte_memcpy function.  The build error
is caused by an interaction between __builtin_constant_p and
"-Werror=array-bounds" as described in this bugzilla:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90387

Modify the code to disable the array-bounds check for GCC versions 9.0
to 9.3.

Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
---
 lib/librte_eal/ppc/include/rte_memcpy.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/lib/librte_eal/ppc/include/rte_memcpy.h b/lib/librte_eal/ppc/include/rte_memcpy.h
index 25311ba1d..dce173d4b 100644
--- a/lib/librte_eal/ppc/include/rte_memcpy.h
+++ b/lib/librte_eal/ppc/include/rte_memcpy.h
@@ -8,8 +8,7 @@ 
 
 #include <stdint.h>
 #include <string.h>
-/*To include altivec.h, GCC version must  >= 4.8 */
-#include <altivec.h>
+#include "rte_altivec.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -17,6 +16,11 @@  extern "C" {
 
 #include "generic/rte_memcpy.h"
 
+#if (__GNUC__ == 9 && __GNUC_MINOR__ < 4)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Warray-bounds"
+#endif
+
 static inline void
 rte_mov16(uint8_t *dst, const uint8_t *src)
 {
@@ -192,6 +196,10 @@  rte_memcpy_func(void *dst, const void *src, size_t n)
 	return ret;
 }
 
+#if (__GNUC__ == 9 && __GNUC_MINOR__ < 4)
+#pragma GCC diagnostic pop
+#endif
+
 #ifdef __cplusplus
 }
 #endif