From 4fff72185b38cc9ad3162c1794428141f20366a3 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Wed, 4 Jul 2018 20:38:55 +0200 Subject: [PATCH] target/ppc: fix build on ppc64 host When I try to build a ppc64 target on a ppc64 host (gcc 8.1.1), I have: .../target/ppc/int_helper.c: In function 'helper_vinsertb': .../target/ppc/int_helper.c:1954:32: error: array subscript 18446744073709551608 is above array bounds of 'uint8_t[16]' {aka 'unsigned char[16]'} [-Werror=array-bounds] memmove(&r->u8[index], &b->u8[8 - sizeof(r->element)], \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .../target/ppc/int_helper.c:1965:1: note: in expansion of macro 'VINSERT' If we compare with the macro for ppc64le, we can see sizeof(r->element[0]) should be used instead of sizeof(r->element). And VINSERT uses only u8, u16, u32 and u64, so the maximum value of sizeof(r->element[0]) is 8 Suggested-by: Dr. David Alan Gilbert Signed-off-by: Laurent Vivier Reviewed-by: Richard Henderson Signed-off-by: David Gibson --- target/ppc/int_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 03d37da79f..d52338ed71 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -1951,7 +1951,7 @@ VSPLT(w, u32) #define VINSERT(suffix, element) \ void helper_vinsert##suffix(ppc_avr_t *r, ppc_avr_t *b, uint32_t index) \ { \ - memmove(&r->u8[index], &b->u8[8 - sizeof(r->element)], \ + memmove(&r->u8[index], &b->u8[8 - sizeof(r->element[0])], \ sizeof(r->element[0])); \ } #else