diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/NEWS b/NEWS index 8fe0879bc4..482e355f4f 100644 --- a/NEWS +++ b/NEWS @@ -16,6 +16,9 @@ Deprecated and removed features, and other changes affecting compatibility: * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer defined by <sys/ptrace.h>. +* The nonstandard siginfo_t fields 'si_int' and 'si_ptr' are deprecated, and + will be removed in a future release. Programs should instead use + 'si_value.sival_int' and 'si_value.sival_ptr', respectively. * libm no longer supports SVID error handling (calling a user-provided matherr function on error) or the _LIB_VERSION variable to control error @@ -27,7 +30,18 @@ Deprecated and removed features, and other changes affecting compatibility: Changes to build and runtime requirements: - [Add changes to build and runtime requirements here] +* Some headers now make unconditional use of the C2011 'anonymous union' + feature. In order to compile a program that uses any of these headers, + you must use a compiler that supports this feature, even when conforming + to an earlier language standard. This has been true of GCC and Clang for + many years. The structures and headers affected are: + + - siginfo_t (signal.h, sys/wait.h) + + The advantage of this change is that these headers define many fewer + macros with surprising expansions (for instance, the identifier 'si_pid' + used to be a macro expanding to '_sifields._kill.si_pid' on GNU/Linux + systems). Security related changes: |