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add NULL ptr check

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This commit is contained in:
Brian 2007-03-11 17:29:54 -06:00
parent ccb80d7ec4
commit 15aa7aaa93
1 changed files with 9 additions and 6 deletions
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15
src/mesa/shader/slang/slang_codegen.c
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@ -1985,12 +1985,15 @@ _slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
else {
slang_ir_node *n, *lhs, *rhs;
lhs = _slang_gen_operation(A, &oper->children[0]);
if (lhs->Store->File != PROGRAM_OUTPUT &&
lhs->Store->File != PROGRAM_TEMPORARY &&
lhs->Store->File != PROGRAM_VARYING &&
lhs->Store->File != PROGRAM_UNDEFINED) {
slang_info_log_error(A->log, "Assignment to read-only variable");
return NULL;
if (lhs) {
if (lhs->Store->File != PROGRAM_OUTPUT &&
lhs->Store->File != PROGRAM_TEMPORARY &&
lhs->Store->File != PROGRAM_VARYING &&
lhs->Store->File != PROGRAM_UNDEFINED) {
slang_info_log_error(A->log, "Assignment to read-only variable");
return NULL;
}
}
rhs = _slang_gen_operation(A, &oper->children[1]);