[Mesa-dev] [PATCH 01/13] glsl: Delete symbol table in post-link shaders

[Ian Romanick]

From: Ian Romanick <ian.d.romanick at intel.com>

The symbol table in the linked shaders may contain references to
variables that were removed (e.g., unused uniforms).  Since it may
contain junk, there is no possible valid use.  Delete it and set the
pointer to NULL.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
---
 src/glsl/linker.cpp |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index d802a0a..6d40dd2 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1831,6 +1831,14 @@ done:
 
       /* Retain any live IR, but trash the rest. */
       reparent_ir(prog->_LinkedShaders[i]->ir, prog->_LinkedShaders[i]->ir);
+
+      /* The symbol table in the linked shaders may contain references to
+       * variables that were removed (e.g., unused uniforms).  Since it may
+       * contain junk, there is no possible valid use.  Delete it and set the
+       * pointer to NULL.
+       */
+      delete prog->_LinkedShaders[i]->symbols;
+      prog->_LinkedShaders[i]->symbols = NULL;
    }
 
    ralloc_free(mem_ctx);
-- 
1.7.6