[Bug fortran/45724] segmentation fault occurs when printing string if -malign-double option is used

[kamaraju at gmail dot com]

--- Comment #4 from kamaraju at gmail dot com  2010-09-18 22:26 ---
Ok. Thanks for the explanation. I appreciate it.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45724

[Bug fortran/45724] segmentation fault occurs when printing string if -malign-double option is used

[ubizjak at gmail dot com]

--- Comment #3 from ubizjak at gmail dot com  2010-09-18 21:43 ---
(In reply to comment #2)

> I dont understand your point in copy pasting the manual on -malign-double.
> 
> Are you saying that segmentation fault is an acceptable/expected behavior in
> this case and this bug will not be fixed?

-malign-double is an ABI changing option, it means that source, compiled with
this option, violates the convention on how variables are passed and/or
accessed in the memory. So, when you use -malign-double, you should link your
program with libraries that are also compiled with -malign-double. This
includes ALL libraries, including system libraries.

This is not a bug.


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ubizjak at gmail dot com changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45724

[Bug fortran/45724] segmentation fault occurs when printing string if -malign-double option is used

[kamaraju at gmail dot com]

--- Comment #2 from kamaraju at gmail dot com  2010-09-18 20:29 ---
@Uros Bizjak

I dont understand your point in copy pasting the manual on -malign-double.

Are you saying that segmentation fault is an acceptable/expected behavior in
this case and this bug will not be fixed?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45724

[Bug fortran/45724] segmentation fault occurs when printing string if -malign-double option is used

[ubizjak at gmail dot com]

--- Comment #1 from ubizjak at gmail dot com  2010-09-18 19:47 ---
`-malign-double'
`-mno-align-double'
 Control whether GCC aligns `double', `long double', and `long
 long' variables on a two word boundary or a one word boundary.
 Aligning `double' variables on a two word boundary will produce
 code that runs somewhat faster on a `Pentium' at the expense of
 more memory.

 On x86-64, `-malign-double' is enabled by default.

 *Warning:* if you use the `-malign-double' switch, structures
 containing the above types will be aligned differently than the
 published application binary interface specifications for the 386
 and will not be binary compatible with structures in code compiled
 without that switch.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45724