We have just released a hotfix for RAD Studio 10.3, which addresses a number of issues in the C++ compiler and RTL. This is an important hotfix if you rely on compiler version numbers (for example, for version-specific behaviour in your code, especially useful if you are upgrading); batch compilation; if you use ANSI-encoded source files with non-Latin characters; and it also addresses a number of other issues can affect some common code patterns. We recommend you install it if you've encountered any issues.

The issues include:

Compiler version numbers and version macros were incorrect
Batch compilation is now fully functional
A number of issues with chrono::steady_clock
An issue with ANSI-encoded files that contained characters with a byte value > 127
Some RTL issues, including _lseek (affecting zlib) and operator new() and delete() using std::align_val_t
An issue between the memory size reserved for long double variables, which also affected debugger evaluation
__declspec(dllimport) variables are allowed as a constant initializer
An ICE error with some specific code patterns
FireMonkey apps targeting Android used the wrong version of linkdfm*.dll
Some compilation speed improvements for specific code patterns

RAD Studio 10.3.0 C++ Toolchain Hotfix
This patch addresses a number of issues in the C++ toolchain in C++Builder 10.3, including compiler issues and RTL/STL issues.

Details

This hotfixes addresses a number of issues, including:

Compiler version numbers and version macros were incorrect
Batch compilation is now fully functional
A number of issues with chrono::steady_clock
An issue with ANSI-encoded files that contained characters with a byte value > 127
Some RTL issues, including _seek (affecting zlib) and operator new() and delete() using std::align_val_t
An issue between the memory size reserved for long double variables, which also affected debugger evaluation
__declspec(dllimport) variables are allowed as a constant initializer
An ICE error with some specific code patterns
FireMonkey apps targeting Android used the wrong version of linkdfm*.dll
Some compilation speed improvements for specific code patterns

Only for V.I.P