On 2009-04-20 15:17:44 +0200, Vincent Lefevre wrote:
On 2009-04-17 12:09:42 -0500, Gabriel Dos Reis wrote:
At least, let's get it archived on GCC mailing lists.
Is it a bug that has been identified?
FYI, this has been fixed in the 4.3 branch in r143494.
This was PR tree-optimization/36765.
2009/4/19 Jason Mancini jayrus...@hotmail.com:
Vincent Lefevre writes:
while ((*(q++))-- == 0) ;
Is that defined and legal?? Is q incremented before or after *q is
decremented? They are both post operators!
Jason Mancini
It's defined and legal (so long as q != q, which might well be
On 2009-04-17 12:09:42 -0500, Gabriel Dos Reis wrote:
At least, let's get it archived on GCC mailing lists.
Is it a bug that has been identified? If not, perhaps this should
be added to the regression tests.
The program without the quotes:
/* With GCC 4.3.2 and -O2 option: output value is 1
On 2009-04-20 00:30:21 -0700, James Dennett wrote:
2009/4/19 Jason Mancini jayrus...@hotmail.com:
Vincent Lefevre writes:
while ((*(q++))-- == 0) ;
Is that defined and legal?? Is q incremented before or after *q
is decremented? They are both post operators!
It's defined and
As the bug occurs only when malloc is in the tested function,
Note that gcc 'knows' that memory obtained by malloc does not
alias other memory.
You can use a differently named wrapper function for malloc,
or use the malloc attribute for another function, to experiment
how this affects code
On 2009-04-20 10:04:00 -0400, Joern Rennecke wrote:
As the bug occurs only when malloc is in the tested function,
Note that gcc 'knows' that memory obtained by malloc does not
alias other memory.
Yes, in the case of GMP, this was a GMP internal function, not malloc,
but this function is
Vincent Lefevre writes:
while ((*(q++))-- == 0) ;
Is that defined and legal?? Is q incremented before or after *q is
decremented? They are both post operators!
Jason Mancini
_
Rediscover Hotmail®: Get e-mail storage that
At least, let's get it archived on GCC mailing lists.
On Fri, Apr 17, 2009 at 11:25 AM, Torbjorn Granlund t...@gmplib.org wrote:
Vincent Lefevre vinc...@vinc17.org writes:
FYI, here's a simple testcase:
/* With GCC 4.3.2 and -O2 option: output value is 1 instead of 0.
* If
