mesa: don't smash the stack in _mesa_find_used_registers
At some point this actually triggered, not sure if it still does.
Give a meaningful assert and refuse to smash the stack anyway.
diff --git a/src/mesa/program/program.c b/src/mesa/program/program.c
index 3b6d682..06b9539 100644
--- a/src/mesa/program/program.c
+++ b/src/mesa/program/program.c
@@ -876,12 +876,16 @@
const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
if (inst->DstReg.File == file) {
- used[inst->DstReg.Index] = GL_TRUE;
+ ASSERT(inst->DstReg.Index < usedSize);
+ if(inst->DstReg.Index < usedSize)
+ used[inst->DstReg.Index] = GL_TRUE;
}
for (j = 0; j < n; j++) {
if (inst->SrcReg[j].File == file) {
- used[inst->SrcReg[j].Index] = GL_TRUE;
+ ASSERT(inst->SrcReg[j].Index < usedSize);
+ if(inst->SrcReg[j].Index < usedSize)
+ used[inst->SrcReg[j].Index] = GL_TRUE;
}
}
}