The comment start symbol for arm assembler

[Hanzac Chen]

Hi,

Is the comment symbol for arm "@"? But the intermediate code
(assembler code)  generated by GCC 4.1.0 (gcc-4.1-20051022) can't be
assembled by the latest release of binutils (binutils-2.16.1).

Which is the correct line-comment symbol for arm assembler?

Thanks,
Hanzac