r600g/sb: fix buffer overflow in sb_ostream

Fixes segfault during bytecode dump with bfgminer kernel

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>

diff --git a/src/gallium/drivers/r600/sb/sb_bc.h b/src/gallium/drivers/r600/sb/sb_bc.h
index 8b93263..6e73b41 100644 (file)
--- a/src/gallium/drivers/r600/sb/sb_bc.h
+++ b/src/gallium/drivers/r600/sb/sb_bc.h
@@ -92,7 +92,7 @@ public:
 
        sb_ostream& operator <<(double d) {
                char b[32];
-               sprintf(b, "%f", d);
+               snprintf(b, 32, "%g", d);
                return *this << b;
        }