[Mesa-dev] [PATCH 2/2] tgsi: fix coverity out-of-bounds warning

[Rob Clark]

From: Rob Clark <robclark at freedesktop.org>

CID 1271532 (#1 of 1): Out-of-bounds read (OVERRUN)34. overrun-local:
Overrunning array of 2 16-byte elements at element index 2 (byte offset
32) by dereferencing pointer &inst.Dst[i].

Signed-off-by: Rob Clark <robclark at freedesktop.org>
---
 src/gallium/auxiliary/tgsi/tgsi_text.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c
index 955d042..8bdec06 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_text.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_text.c
@@ -1081,6 +1081,9 @@ parse_instruction(
       inst.Memory.Qualifier = 0;
    }
 
+   assume(info->num_dst <= TGSI_FULL_MAX_DST_REGISTERS);
+   assume(info->num_src <= TGSI_FULL_MAX_SRC_REGISTERS);
+
    /* Parse instruction operands.
     */
    for (i = 0; i < info->num_dst + info->num_src + info->is_tex; i++) {
-- 
2.5.5