Hallo Ralf! Ralf Wildenhues wrote: > Gary V. Vaughan <gary <at> gnu.org> writes: >> Eric Blake wrote: >>>>> static int sysval = 0; >>> That's redundant. Uninitialized static variables live in .bss and are >>> 0-initialized by the C runtime (it is only the heap and uninitialized >>> local variables that have garbage values). >> That is implementation defined IMHO. > > No. This has nothing to do with ELF section, but is required by C. > C89, 3.1.2.4: > | An object declared with external or internal linkage, or with the > | storage-class specifier static has static storage duration. For such > | an object, storage is reserved and its stored value is initialized > | only once, prior to program startup. > > and 3.5.7: > | If an object that has static storage duration is not initialized > | explicitly, it is initialized implicitly as if every member that has > | arithmetic type were assigned 0 and every member that has pointer type > | were assigned a null pointer constant. If an object that has > | automatic storage duration is not initialized explicitly, its value is > | indeterminate./65/
Okay, thanks. I didn't know that.
Cheers,
Gary.
--
Gary V. Vaughan ())_. [EMAIL PROTECTED],gnu.org}
Research Scientist ( '/ http://blog.azazil.net
GNU Hacker / )= http://trac.azazil.net/projects/libtool
Technical Author `(_~)_ http://sources.redhat.com/autobook
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