util/ra: Sanity check that we're adding a valid reg to a class.

[mesa.git] / src / util / register_allocate.c

diff --git a/src/util/register_allocate.c b/src/util/register_allocate.c
index a65b5ea154f70b96cf960821b8e0a6d0b2dab31c..68d4a13ca1e9e55e34c15156adc75c6ceca04802 100644 (file)
--- a/src/util/register_allocate.c
+++ b/src/util/register_allocate.c
@@ -371,6 +371,8 @@ ra_class_add_reg(struct ra_regs *regs, unsigned int c, unsigned int r)
 {
    struct ra_class *class = regs->classes[c];
 
+   assert(r < regs->count);
+
    BITSET_SET(class->regs, r);
    class->p++;
 }