The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2019.12 stable Release of the Linaro GCC 7 source package.
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
This stable1 Release is based on FSF GCC 7.5.0+svn278197 and includes performance improvements and bug fixes backported from mainline GCC. This Release is based on Linaro Snapshot GCC 7.5-2019.12-rc1.
Changes in this stable GCC source package Release include:
- Updates merged from FSF GCC 7.5.0+svn278197
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1 Linaro ‘stable’ source archive releases are Linaro packaged versions of the latest FSF GCC release. The Linaro ‘maintenance’ source archive releases are Linaro packaged versions of the previous year’s FSF GCC release.