> Is there dwarf information that gives the size of a variable? I have a > test case which when run on Intel gdb can print the size of an > optimized out variable. However on PowerPC, gdb says the size > information for the variable is optimized out. Is there some DWARF > information that I can print on the Intel binary that shows the size > information for the variable even though the variable is optimized out? > Then by comparison on PowerPC I would expect the DWARF information > would either say the size of the variable is optimized out or there is > no information available.
If you try to debug at an optimization level higher than -Og, your mileage may vary and depend on various factors; that's apparently an example where the debug info is slightly less damaged at -O3 on x86 than on PowerPC, but there are probably cases where this will be the other way around. -- Eric Botcazou
