Borland C++ ver. 3 was a great product, vastly superior to Microsoft's Programmer's Workbench (character-based UI).
However, when we upgraded to Borland 4, we encountered catastrophic bugs: Symbols were flagged as undefined that were successfully linked a few modules earlier. Use of 'new' operator in a DLL crashed the program (that one cost us two weeks). To be clear: these were bugs in the compiler, as they had compiled & run with no problem in the previous version.
However, when we upgraded to Borland 4, we encountered catastrophic bugs: Symbols were flagged as undefined that were successfully linked a few modules earlier. Use of 'new' operator in a DLL crashed the program (that one cost us two weeks). To be clear: these were bugs in the compiler, as they had compiled & run with no problem in the previous version.
We had to switch to Visual Studio.