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extend.texi (malloc attribute): Adjust according to implementation.

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2012-01-11  Richard Guenther  <rguenther@suse.de>

	* doc/extend.texi (malloc attribute): Adjust according to
	implementation.

From-SVN: r183092
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Richard Guenther 2012-01-11 09:01:36 +00:00 committed by Richard Biener
parent 8763317661
commit 65d5c48586
2 changed files with 9 additions and 5 deletions
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@ -1,3 +1,8 @@
2012-01-11 Richard Guenther <rguenther@suse.de>
* doc/extend.texi (malloc attribute): Adjust according to
implementation.
2012-01-10 Aldy Hernandez <aldyh@redhat.com>
Patrick Marlier <patrick.marlier@gmail.com>

9
gcc/doc/extend.texi
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@ -2771,13 +2771,12 @@ efficient @code{jal} instruction.
@cindex @code{malloc} attribute
The @code{malloc} attribute is used to tell the compiler that a function
may be treated as if any non-@code{NULL} pointer it returns cannot
alias any other pointer valid when the function returns.
alias any other pointer valid when the function returns and that the memory
has undefined content.
This will often improve optimization.
Standard functions with this property include @code{malloc} and
@code{calloc}. @code{realloc}-like functions have this property as
long as the old pointer is never referred to (including comparing it
to the new pointer) after the function returns a non-@code{NULL}
value.
@code{calloc}. @code{realloc}-like functions do not have this
property as the memory pointed to does not have undefined content.
@item mips16/nomips16
@cindex @code{mips16} attribute