6.3. C23 support in glibc

The GNU C Library (glibc) in Red Hat Enterprise Linux 10 includes support for C standard library facilities associated with the ISO C23 language standard.

Red Hat Enterprise Linux 10 includes GNU Compiler Collection (GCC) 14 as the default C and C++ compiler. To compile C application code as ISO C23 with GCC, use an option such as -std=c23. If you use another GCC release (for example, from a compiler toolset) or a different compiler, use the dialect option and documentation for that toolchain. C23 language support varies by compiler version.

The glibc interfaces available to your program depend on the library version in Red Hat Enterprise Linux 10 and on the language and feature selection you pass to the compiler.

For details about specific headers, types, and functions, see the upstream documentation.