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Andrew Kelley
8344a50e1c
* Remove the ability for GenZir parent Scope to be null. Now there is a Top Scope at the top. * Introduce Scope.Namespace to contain a table of decl names in order to emit a compile error for name conflicts. * Fix use of invalid memory when reporting compile errors by duplicating decl names into a temporary heap allocated buffer. * Fix memory leak in while and for loops, not cleaning up their labeled_breaks and store_to_block_ptr_list arrays. * Fix stage2 test cases because now the source location of redundant comptime keyword compile errors is improved. * Implement compile error for local variable shadowing declaration.