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Check for the vector being a constant before trying to get its value.

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This commit is contained in:
Bill Currie 2011-03-07 14:04:36 +09:00
parent c069bafad8
commit 041c5d53b8
1 changed files with 2 additions and 1 deletions
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3
tools/qfcc/source/constfold.c
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@ -342,7 +342,8 @@ do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
return e2;
if (op == '+' && is_constant (e2) && VectorIsZero (expr_vector (e2)))
return e1;
if (op == '-' && is_constant (e1) && VectorIsZero (expr_vector (e1))) {
if (op == '-' && is_constant (e1) && VectorIsZero (expr_vector (e1))
&& is_constant (e2)) {
vec3_t v;
VectorNegate (expr_vector (e2), v);
e = new_vector_expr (v);