The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2018.01 snapshot of Linaro GCC 6 and 7 source packages.

o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change.

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728

For an explanation of the changes please see the following website:

https://gcc.gnu.org/gcc-7/changes.html

o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.2+svn254792 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be part of the 2018.02 stable[2] quarterly release.

This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2018.01/

Interesting changes in this GCC source package snapshot include:

* Updates to GCC 7.2+svn256695

o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.4+svn254791 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot contents will be part of the next maintenance release.

This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2018.01/

Interesting changes in this GCC source package snapshot include:

* Updates to GCC 6.4+svn256699

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[1]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed.

[2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed.

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