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-rw-r--r--src/mesa/shader/arbprogparse.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/shader/arbprogparse.c b/src/mesa/shader/arbprogparse.c
index cd6289deb58..a4d0fc3efc8 100644
--- a/src/mesa/shader/arbprogparse.c
+++ b/src/mesa/shader/arbprogparse.c
@@ -969,6 +969,7 @@ parse_output_color_num (GLcontext * ctx, const GLubyte ** inst,
GLint i = parse_integer (inst, Program);
if ((i < 0) || (i >= (int)ctx->Const.MaxDrawBuffers)) {
+ *color = 0;
program_error(ctx, Program->Position, "Invalid draw buffer index");
return 1;
}