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invoke.texi (fstrict-volatile-bitfields): Clarify current behavior.

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2014-02-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * doc/invoke.texi (fstrict-volatile-bitfields): Clarify current
        behavior.

From-SVN: r207473
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Bernd Edlinger 2014-02-04 15:18:34 +00:00 committed by Bernd Edlinger
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@ -1,3 +1,8 @@
2014-02-04 Bernd Edlinger <bernd.edlinger@hotmail.de>
* doc/invoke.texi (fstrict-volatile-bitfields): Clarify current
behavior.
2014-02-04 Richard Biener <rguenther@suse.de>
PR lto/59723

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gcc/doc/invoke.texi
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@ -22463,6 +22463,10 @@ read or write that is correctly aligned for the target machine. In this
case GCC falls back to generating multiple accesses rather than code that
will fault or truncate the result at run time.
Note: Due to restrictions of the C/C++11 memory model, write accesses are
not allowed to touch non bit-field members. It is therefore recommended
to define all bits of the field's type as bit-field members.
The default value of this option is determined by the application binary
interface for the target processor.