10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
I would like to acquire a very old version of gcc: 4.4.3 and set it up in such a way that I can use the update-alternatives command to switch between my current version and the older version. I believe I may have found a website where I can download 4.4.3 from. However, I am not sure what all I... (6 Replies)
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2. Programming
Hi,
I just try to solve the problem why one app failing on box1 and runs ok on box2, they have diff gcc version as I see from /proc/version:
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4. HP-UX
Hi,
In unix box GCC installed under the /usr/local/bin/gcc, i want to know the version of GCC.
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Thanks & Regards,
Suji (1 Reply)
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5. UNIX for Dummies Questions & Answers
Please someone can say me how to know the gcc version installed on my sunsolaris?
Thanks (2 Replies)
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6. Solaris
Hello everybody,
I am having two machines. I am using g++v2.95
When I do the build,the size of output file on both machines differ. I am not able to find what can be the problem. Both the machines are solaris 5.6
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7. Programming
Hi mates,
I am a new comer of this forums.
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8. UNIX for Dummies Questions & Answers
How do you determine which version of the GNU gcc compiler is on your system? (1 Reply)
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9. Programming
I have some crypting functions in object-file - for example,func.o
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10. Shell Programming and Scripting
Folks,
I am using gcc 2.7.2.1 for NeXT PDO on my Solaris box. I want to get gcc version in a script. I do gcc -v and try to filter the output through awk. It won't come. Strange. Assigning it to the variable is also not possible. Any ideas ?
Cheers,
Amol. (4 Replies)
Discussion started by: amol
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__BUILTIN_OBJECT_SIZE(3) BSD Library Functions Manual __BUILTIN_OBJECT_SIZE(3)
NAME
__builtin_object_size -- return the size of the given object
SYNOPSIS
size_t
__builtin_object_size(void *ptr, int type);
DESCRIPTION
The __builtin_object_size() function is a gcc(1) built-in function that returns the size of the ptr object if known at compile time and the
object does not have any side effects.
RETURN VALUES
If the size of the object is not known or it has side effects the __builtin_object_size() function returns:
(size_t)-1 for type 0 and 1.
(size_t)0 for type 2 and 3.
If the size of the object is known, then the __builtin_object_size() function returns the maximum size of all the objects that the compiler
knows that they can be pointed to by ptr when type & 2 == 0, and the minimum size when type & 2 != 0.
SEE ALSO
gcc(1), __builtin_return_address(3), attribute(3), ssp(3)
HISTORY
The __builtin_object_size() appeared in GCC 4.1.
CAVEATS
This is a non-standard, compiler-specific extension.
BSD
December 19, 2010 BSD