GoKawiilGCC 16 Release Series
Changes, New Features, and Fixes
This page is a "brief" summary of some of the huge number of improvements in GCC 16. You may also want to check out our Porting to GCC 16 page and the full GCC documentation.
Caveats
int8_t etc. are now signed char on Solaris for conformance with the C99 standard. However, this is an incompatible change. See the porting notes for more information.
etc. are now on Solaris for conformance with the C99 standard. However, this is an incompatible change. See the porting notes for more information. The -pthread option no longer predefines _REENTRANT on Solaris. See the porting notes for more information.
option no longer predefines on Solaris. See the porting notes for more information. The so-called " json " format for -fdiagnostics-format= has been removed in this release. Users seeking machine-readable diagnostics from GCC should use SARIF.
Link-Time Optimization now supports better handling of toplevel asm statements with -flto-toplevel-asm-heuristics .
. Speculative devirtualization now handles general indirect function calls and supports speculating of more than one target.
The vectorizer is now more flexible in identifying in-loop parallelism of reductions.
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