From 349cb60ed58e42341351c5f0ebd186acb8f12005 Mon Sep 17 00:00:00 2001
From: Francisco Jerez <currojerez@riseup.net>
Date: Sat, 19 Nov 2011 21:31:28 +0100
Subject: [PATCH] nv50/ir: Don't crash on zero sized BitSets.

---
 src/gallium/drivers/nv50/codegen/nv50_ir_util.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/drivers/nv50/codegen/nv50_ir_util.cpp b/src/gallium/drivers/nv50/codegen/nv50_ir_util.cpp
index 56d53b48ddd..4eaaa9602c1 100644
--- a/src/gallium/drivers/nv50/codegen/nv50_ir_util.cpp
+++ b/src/gallium/drivers/nv50/codegen/nv50_ir_util.cpp
@@ -219,6 +219,7 @@ bool BitSet::allocate(unsigned int nBits, bool zero)
    if (zero)
       memset(data, 0, (size + 7) / 8);
    else
+   if (nBits)
       data[(size + 31) / 32 - 1] = 0; // clear unused bits (e.g. for popCount)
 
    return data;
-- 
2.30.2