In VHDL, it is good practice to constrain integer types (or types derived from integer types) when they are used for signals. Doing so will allow the synthesis tool to optimize the number of bits used for this signal. If this rule is enabled, Sigasi will report all unconstrained integer types used for signals.
... signal sig_a : integer; signal sig_b : integer range 0 to 100; ...
This rule can be disabled for your project, or its severity and parameters can be modified in the project linting settings. Alternatively, it can be manually configured with the following template: