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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2014-02-04 15:18:34 +0000 |
|---|---|---|
| committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2014-02-04 15:18:34 +0000 |
| commit | 229e56f91e19b4b7015139a6cbe5fc77cec2ebe1 (patch) | |
| tree | c06f75b512289f517e6c6f3c8b7bd5c7314d9a9a | |
| parent | f34ffd403d7d19b88d7d734a589260695c57756f (diff) | |
| download | gcc-229e56f91e19b4b7015139a6cbe5fc77cec2ebe1.zip gcc-229e56f91e19b4b7015139a6cbe5fc77cec2ebe1.tar.gz gcc-229e56f91e19b4b7015139a6cbe5fc77cec2ebe1.tar.bz2 | |
invoke.texi (fstrict-volatile-bitfields): Clarify current behavior.
2014-02-04 Bernd Edlinger <bernd.edlinger@hotmail.de>
* doc/invoke.texi (fstrict-volatile-bitfields): Clarify current
behavior.
From-SVN: r207473
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 99a153b..9647593 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 89e80ac..640c123 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -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. |