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annotate doc/posix-functions/setjmp.texi @ 15607:6355dc4626b5

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doc: Update regarding MSVC 9. * doc/gnulib-intro.texi (Target Platforms): Classify MSVC as "rarely tested". * doc/posix-functions/*.texi: Update with info about MSVC 9. * doc/posix-headers/*.texi: Likewise. * doc/pastposix-functions/*.texi: Likewise. * doc/glibc-functions/*.texi: Likewise. * doc/glibc-headers/*.texi: Likewise.
author Bruno Haible <bruno@clisp.org>
date Sun, 11 Sep 2011 21:56:17 +0200
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1 @node setjmp
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2 @section @code{setjmp}
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3 @findex setjmp
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4
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5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/setjmp.html}
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6
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7 Gnulib module: ---
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8
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9 Portability problems fixed by Gnulib:
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10 @itemize
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11 @end itemize
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12
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13 Portability problems not fixed by Gnulib:
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14 @itemize
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15 @item
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16 POSIX does not specify whether @code{setjmp} saves the signal mask in the
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17 @code{jmp_buf}. It does on BSD platforms, and on glibc platforms when
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18 @code{_BSD_SOURCE} is defined; in this case @code{setjmp} behaves like
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19 @code{sigsetjmp(.,1)}, and functions @code{_setjmp} and @code{_longjmp} are
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20 available that don't save or restore the signal mask. On System V platforms
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21 (excluding HP-UX), and on glibc platforms by default, @code{setjmp} doesn't
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22 save the signal mask.
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23 @end itemize