Changelog

All notable changes to the timelimit project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

1.9.4 - 2026-07-27

Fixes

• Rust implementation:
  • correct the Cargo categories field of the binary crate

Additions

• Rust implementation:
  • add the timelimit::limit_smol::Limit.run_with_io() method to communicate with the child process
  • add the docs.rs links to both crates
  • add more integration tests for both crates

1.9.3 - 2026-07-24

Additions

• Add a Rust implementation: the timelimit library crate and the timelimit-cli binary one.
• Add some MkDocs-based documentation.

Other changes

• Switch to SPDX copyright and license tags.
• Switch to yearless copyright notices.
• Use reuse 6.x, switch from .reuse/dep5 to REUSE.toml for the exceptions.

1.9.2 - 2021-05-16

Fixes

• Happy 20th birthday, timelimit!
• Fix a bug with propagating a SIGKILL or SIGSTOP signal on at least some Linux/glibc systems

1.9.1 - (withdrawn)

1.9.0 - 2018-04-14

Fixes

• Drop an unused preprocessor conditional
• Mark some function parameters as used when some platform features are not present
• Define _POSIX_C_SOURCE and _XOPEN_SOURCE by default

Additions

• Add the --features command-line option that always lists the "timelimit" feature (with the program version) and also lists the "subsecond" feature (version 1.0) if available
• Autodetect platform features instead of specifying them in the Makefile
• Use the FSF TAP shell library
• Add the build-and-test-all tool to, well, test builds with and without the options supported on the current platform

Other changes

• Slightly change the format of the usage error message

1.8.2 - 2017-11-20

Fixes

• Allow the install(1) invocations to be overridden

1.8.1 - 2016-04-15

Additions

• Install the tests as documentation examples

Other changes

• Remove the $Ringlet tags from the source files
• Use the C99 bool type
• Use the C99 const keyword and in-place variable declarations

1.8 - 2011-04-13

Fixes

• getopt() returns -1 on error, not EOF

Additions

• Add a simple test suite compatible with Perl's TAP framework
• Add the ability to specify signals by name and the -l command-line option to list the available signal names. Debian: #621775

1.7 - 2010-09-30

Fixes

• Report the actual error condition if the waitpid() call fails
• Do not allow SIGCHLD to interrupt waitpid() after the kill

Additions

• Implement microsecond wait time precision using setitimer(2) Debian: #597824

Other changes

• Remove the warn() function that is never used even on platforms that lack the err(3) family of functions
• Remove the cvs_id string

1.6 - 2010-06-26

Fixes

• Rename the ChangeLog to NEWS, since that's what it is
• Honor CPPFLAGS

1.5 - 2009-10-30

Additions

• Add the __dead2 definition for no-return functions
• Add the -p flag to propagate information about the child process being terminated by a signal

1.4 - 2008-11-12

Fixes

• Correct options parsing on GNU systems - do not let timelimit grab the option arguments passed to the executed program Debian: #505140, reported by John Hasler jhasler@debian.org

1.3 - 2008-09-03

Fixes

• Fix the $Ringlet VCS keyword in the source files

1.2 - 2008-08-22

Fixes

• Define _GNU_SOURCE to properly use the Linux header files

Other changes

• Return the child process exit code instead of always exiting with 0

1.1 - 2007-12-07

Fixes

• Move the manual page from section 8 to section 1

1.0 - 2007-11-28

Fixes

• Attempt to create the installation directories
• Style fixes to the manual page

Additions

• Add an install target to the Makefile
• Build and install the gzipped manual page, too
• Add a two-clause BSD copyright to all files

Other changes

• Remove the TARGETS file that was never used as intended
• Break the web-visible documentation out of the source tree

1.0pre3 - 2001-06-09

Fixes

• Actually add the -q flag to the getopt() arguments (ARGH!)
• Use envopts[] for time/sig variable setting (both env and cmdline)
• Warn when no time/sig arguments specified
• Silence a few gcc warnings
• Removed CC, CFLAGS initial settings from Makefile

1.0pre2 - 2001-05-21

Additions

• Added the -q flag to not output messages about signals sent to the child process
• Added timelimit.8 manpage [roam/alpha]
• Added killtime/warntime/killsig/warnsig defaults

Other changes

• Changed the execv() call to execvp(), so PATH is searched for the specified command, as suggested by alpha
• Changed the default compiler to gcc, as suggested by alpha

1.0pre1 - 2001-05-16

Started

• First rolled-together prerelease.