mesa: fix bug in previous changes to _slang_resolve_attributes()

1 files changed, 3 insertions, 1 deletions

diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 30035b4fee..a6390846b2 100644
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -275,7 +275,7 @@ _slang_resolve_attributes(struct gl_shader_program *shProg,
                const char *name = origProg->Attributes->Parameters[k].Name;
                const GLint size = origProg->Attributes->Parameters[k].Size;
                const GLenum type =origProg->Attributes->Parameters[k].DataType;
-               GLint index, attr;
+               GLint index;
 
                /* See if there's a user-defined attribute binding for
                 * this name.
@@ -313,6 +313,8 @@ _slang_resolve_attributes(struct gl_shader_program *shProg,
                                    size, type, attr);
             }
 
+            assert(attr >= 0);
+
             /* update the instruction's src reg */
             inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + attr;
          }