Appendix B. Changes in Version 10.1

The sections below document features and bug fixes introduced in Red Hat Developer Toolset 10.1.

B.1. Changes in GCC

Red Hat Developer Toolset 10.1 is distributed with GCC 10.2.1, which provides numerous bug fixes.

One of the most notable bug fixes is:

Previously, the gcc-gfortran subpackage did not include the libgfortran_nonshared.a static library. As a consequence, linking a program was not always successful because several symbols were missing. With this update, the devtoolset-10-gcc-gfortran package now contains the libgfortran_nonshared.a library and the program can be linked successfully.
Bug#1927579

Red Hat Developer Toolset 10.1 is distributed with elfutils 0.182.

Numerous bug fixes and new features have been added since the previous release of Red Hat Developer Toolset:

New features added to the debuginfod server:
- More efficient package traversal, debuginfod now tolerates various errors during scanning. The grooming process is more visible and interruptible, and provides more Prometheus metrics.
- A new thread-busy metric and more detailed error metrics.
- The new --fdcache-mintmp option and file system free space tracking.
- Increased web API concurrency while grooming.
New features added to debuginfod-client:
- Compressed kernel ELF images are now supported.
- The DEBUGINFOD_SONAME macro has been added to debuginfod.h. This macro can be used with the dlopen() function to load the libdebuginfod.so library.
- The new debuginfod_set_verbose_fd function and DEBUGINFOD_VERBOSE environment variable have been added.

Red Hat Developer Toolset 10.1 is distributed with strace 5.7.

The following feature has been added since the previous release of Red Hat Developer Toolset:

The --pidns-translation option has been added for PID namespace translation. For more information about PID namespace translation, see the pid_namespaces manual page.
This enhancement addresses RHEL Bug#1790836 and Fedora Bug#1035433.

Red Hat Developer Toolset 10.1 is distributed with Dyninst 10.2.1.

The following features have been added since the previous release of Red Hat Developer Toolset 10.1:

support for the debuginfod protocol for automated DWARF debuginfo downloading
several memory leak fixes

Red Hat Developer Toolset 10.1 is distributed with SystemTap 4.4.

The following features have been added or modified since the previous release of Red Hat Developer Toolset:

Performance and stability improvements to user-space probing.
Users can now access implicit thread local storage variables on these architectures: AMD64, Intel 64, IBM Z, the little-endian variant of IBM Power Systems.
Initial support for processing of floating point values.
Improved concurrency for scripts using global variables. The locks required to protect concurrent access to global variables have been optimized so that they span the smallest possible critical region.
New syntax for defining aliases with both a prologue and an epilogue.
New @probewrite predicate.
syscall arguments are writable again.

For further information about notable changes, see the upstream SystemTap 4.4 release notes before updating SystemTap.