kc3-lang/gnulib/doc/posix-functions/setjmp.texi

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• Hash : adfbfffa
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  Date : 2024-07-20T20:02:14
  

  doc: Sort the ISO C and POSIX Function Substitutes by header file.
  
  * doc/gnulib.texi (Function Substitutes): Add one section per header
  file.
  * doc/posix-functions/*.texi: Each of these files is now a subsection.
  

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• doc/posix-functions/setjmp.texi

• @node setjmp
  @subsection @code{setjmp}
  @findex setjmp
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/setjmp.html}
  
  Gnulib module: ---
  
  Portability problems fixed by Gnulib:
  @itemize
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @item
  POSIX does not specify whether @code{setjmp} saves the signal mask in the
  @code{jmp_buf}.  It does on BSD platforms, and on glibc platforms when
  @code{_BSD_SOURCE} (and/or @code{_DEFAULT_SOURCE} on glibc >= 2.19) is defined;
  in this case @code{setjmp} behaves like @code{sigsetjmp(.,1)}, and functions
  @code{_setjmp} and @code{_longjmp} are available that don't save or restore
  the signal mask.  On System V platforms (excluding HP-UX), and on glibc
  platforms by default, @code{setjmp} doesn't save the signal mask.
  @end itemize
  

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