Add assertions to Fully_Qualified_Name_String
The Ada front end now ensures correct function behavior by adding assertions to `Full_Qualified_Name_String` to validate its inputs and outputs.
This commit adds assertions to the Full_Qualified_Name_String function within the Ada front end. These assertions improve code robustness by validating expected conditions during execution. The change specifically impacts exp_util.adb, a utility file for expression handling in the Ada compiler.
In Details
The gcc/ada subsystem handles the Ada programming language front end for the GCC compiler. This specific change targets exp_util.adb, which contains utility functions for expression processing within the Ada front end. Adding assertions to Full_Qualified_Name_String aims to enforce invariants and improve the reliability of the name string generation, which is crucial for various compiler passes like semantic analysis and code generation. While assertions are a common debugging and validation technique, their strategic placement here helps guard against subtle issues in how fully qualifi…
For Context
The Ada front end is the part of the GCC compiler that understands Ada code. When you write source code, the front end parses it, checks for errors, and translates it into an intermediate representation that the rest of the compiler can understand. This commit focuses on exp_util.adb, a file containing helper functions related to processing expressions in Ada. Specifically, it adds 'assertions' within the Full_Qualified_Name_String function. An assertion is a check that a programmer puts in code to ensure that certain conditions are true at specific points during execution. If an assertion fails, it means something unexpected happened, often indicating a bug. In this case, adding assertions helps the compiler itself be more robust by catching internal inconsistencies in how it constructs fully qualified names, which are unique identifiers for program elements.