for example during the installation of source packages which

There is now support for parallelized Link-Time Optimization

There is support for setting a different LTO flag for the

Fortran compiler, including to empty when mixing

LTO compilation, for example to select an alternative linker or

3.1.0.  Using it now gives a warning which will

The code mitigating stack overflow with PCRE regexps on very

long strings is enabled for PCRE2 < 10.30 also when JIT is enabled,

since stack overflows have been seen in that case.

Fix to correctly show the group labels in

local function, thanks to bug report and patch

now work correctly for large table entries (in the

millions).  Reported by Sebastian Meyer and investigated by more

Low-level socket read/write operations have been fixed to

correctly signal communication errors. Previously, such errors could

lead to a segfault due to invalid memory access. Reported

values slightly outside [0,1], thanks to Suharto Anggono's

option.  If this causes unanticipated timeouts, consider

has been fixed to return memory aligned for

no longer segfaults when called again after

Accessing a long vector represented by a compact integer

sequence no longer segfaults (reported and debugged by Hugh

now works also for strings with multiple

A very old bug could cause a segfault in

when terms involved logical variables.  Part of

no longer skips non-directory files, thanks to a

patch by Sebastian Meyer, fixing the remaining part of

Paths with non-ASCII characters caused problems for

now correctly matches named arguments, thanks

positions into text containing characters outside of the Unicode

-concatenation, i.e., to the empty string

is a string and to the zero-length value

A package whose code uses this should depend on

deparses to more than 500 characters, thanks to a report and patch

returns the new rather than the previous setting.

Thanks to Gu Zuguang for the report and Thomas Lin Pedersen for

indefinitely on the ppc64 architecture for the

was much slower than previously; reported in

matching OS name before the other tests (which were intended only