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authorLaurent Vivier <laurent@vivier.eu>2018-07-04 20:38:55 +0200
committerDavid Gibson <david@gibson.dropbear.id.au>2018-07-07 12:12:27 +1000
commit4fff72185b38cc9ad3162c1794428141f20366a3 (patch)
parent7aeb1e5100c026f2f232e570cd4d56942785f462 (diff)
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 <dgilbert@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
1 files changed, 1 insertions, 1 deletions
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index 03d37da..d52338e 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])); \