Copyright (c) 2010 Joseph Koshy
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Id: dwarf_formblock.3 3962 2022-03-12 15:56:10Z jkoshy
.Dd July 23, 2010 .Dt DWARF_FORMBLOCK 3 .Os .Sh NAME .Nm dwarf_formblock .Nd return the value of a BLOCK attribute .Sh LIBRARY .Lb libdwarf .Sh SYNOPSIS n libdwarf.h .Ft int .Fo dwarf_formblock .Fa "Dwarf_Attribute attr" .Fa "Dwarf_Block **ret" .Fa "Dwarf_Error *err" .Fc .Sh DESCRIPTION Function .Fn dwarf_formblock sets the location pointed to by argument .Fa ret to a pointer to a .Vt Dwarf_Block structure containing the value of the attribute referenced by argument .Fa attr . The form of argument .Fa attr must be one of .Dv DW_FORM_block , .Dv DW_FORM_block1 , .Dv DW_FORM_block2 or .Dv DW_FORM_block4 .
p If argument .Fa err is not .Dv NULL , it will be used to return an error descriptor in case of an error. .Ss Memory Management The memory area referenced by the returned pointer is managed by the DWARF(3) library. The application should not attempt to free this memory area. Portable code may indicate that the memory area is to be freed by using .Xr dwarf_dealloc 3 . .Sh RETURN VALUES Function .Fn dwarf_formblock returns .Dv DW_DLV_OK on success. In case of an error, it returns .Dv DW_DLV_ERROR and sets argument .Fa err . .Sh ERRORS Function .Fn dwarf_formblock may fail with the following errors: l -tag -width ".Bq Er DW_DLE_ATTR_FORM_BAD" t Bq Er DW_DLE_ARGUMENT Either of arguments .Fa attr or .Fa ret was .Dv NULL . t Bq Er DW_DLE_ATTR_FORM_BAD The attribute referenced by argument .Fa attr was not of a permitted kind. .El .Sh SEE ALSO .Xr dwarf 3 , .Xr dwarf_attr 3 , .Xr dwarf_formflag 3 , .Xr dwarf_formref 3 , .Xr dwarf_formsdata 3 , .Xr dwarf_formsig8 3 , .Xr dwarf_formstring 3 , .Xr dwarf_formudata 3 , .Xr dwarf_hasattr 3
Indexes created Fri Jun 19 00:25:02 UTC 2026