GNU Info

(as.info)Lcomm

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`.lcomm SYMBOL , LENGTH'
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   Reserve LENGTH (an absolute expression) bytes for a local common
denoted by SYMBOL.  The section and value of SYMBOL are those of the
new local common.  The addresses are allocated in the bss section, so
that at run-time the bytes start off zeroed.  SYMBOL is not declared
global (Note: `.global'.), so is normally not visible to `ld'.

   Some targets permit a third argument to be used with `.lcomm'.  This
argument specifies the desired alignment of the symbol in the bss
section.

   The syntax for `.lcomm' differs slightly on the HPPA.  The syntax is
`SYMBOL .lcomm, LENGTH'; SYMBOL is optional.