When writing to the YEARS_REG register, if the year value is
99 then the multiplication by 31536000 will overflow into
the sign bit of a 32 bit value and then be erroneously
sign-extended if time_t is 64 bits. Add a cast to avoid this.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
---
hw/arm/omap1.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/arm/omap1.c b/hw/arm/omap1.c
index b433748..b28e052 100644
--- a/hw/arm/omap1.c
+++ b/hw/arm/omap1.c
@@ -2709,8 +2709,8 @@ static void omap_rtc_write(void *opaque, hwaddr addr,
s->ti += ti[1];
} else {
/* A less accurate version */
- s->ti -= (s->current_tm.tm_year % 100) * 31536000;
- s->ti += from_bcd(value) * 31536000;
+ s->ti -= (time_t)(s->current_tm.tm_year % 100) * 31536000;
+ s->ti += (time_t)from_bcd(value) * 31536000;
}
return;
--
1.9.2
