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GCC 11.1 Released

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The GCC developers are proud to announce another major GCC release, 11.1.

This release switches the default debugging format to DWARF 5 [1] on most
targets and switches the default C++ language version to -std=gnu++17.
It makes great progress in the C++20 language support, both on the compiler
and library sides [2], adds experimental C++23 support, some C2X enhancements,
various optimization enhancements and bug fixes, several new hardware
enablement changes and enhancements to the compiler back-ends and many other

Some code that compiled successfully with older GCC versions might require
source changes, see for


for more information about changes in GCC 11.1.

This release is available from the WWW and FTP servers listed here:

The release is in the gcc-11.1.0/ subdirectory.

If you encounter difficulties using GCC 11.1, please do not contact me
directly.  Instead, please visit for information about
getting help.

Driving a leading free software project such as GCC would not be possible
without support from its many contributors.
Not only its developers, but especially its regular testers and users which
contribute to its high quality.  The list of individuals
is too large to thank individually!

Read more

Also: GCC 11.1 Released With Initial Work For Intel AMX / Sapphire Rapids, More C++20/C++23 - Phoronix

GCC 11.1 Is Released

  • GCC 11.1 Is Released

    GCC 11.1 has made std=gnu++17 the default C++ language and DWARF 5 the default debugging format for targets that produce DWARF debugging information. There is also very experimental C++23 support, C2X enhancements and a whole lot more.


    The biggest change since GCC 10 is that -std=gnu++17, instead of -std=gnu++14, is now the default C++ language. That's just one of many changes to the GNU Compiler Collection's C++ compiler. This release adds several new C++20 features like array size deduction in new-expressions and pseudo-destructors end object lifetimes. The C++ Standards Support in GCC has an overview of what parts of the C++20 standard, published in 2020 as the name implies, are implemented in GCC 11.1.

    GCC 11.1 introduces two new warnings that are enabled if C++20 is used: -Wdeprecated-enum-enum-conversion and -Wdeprecated-enum-float-conversion. First first warns about deprecated arithmetic conversions on operands of enumeration types, and the latter warns about deprecated arithmetic conversions on operands where one is of enumeration type and the other is of a floating-point type.

    GCC 11.1 also adds some initial support for the upcoming C++23 standard. That standard is still a draft, so it is way to early to actually use any of the C++23 features.

Side note

  • SD Times news digest: Facebook joins the Rust Foundation, Updated Google Play guidance, and mabl announces native Jira integration

    Facebook announced its support for the Rust Foundation and stated that it is committed to sustaining and growing the Rust open-source ecosystem and community.

    According to Facebook, it currently has multiple teams throughout the company writing Rust code and even has a dedicated Rust team that is primarily responsible for the growth of Rust development inside the company as well as contributing to open source.


    This GCC 11.1 release switches the default debugging format to DWARF 5 [1] on most targets and switches the default C++ language version to -std=gnu++17.

    The release also improves C++20 language support, both on the compiler and library sides], adds experimental C++23 support, some C2X enhancements and various optimization enhancements.

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