Rationale for comment rules in MISRA

Question

Rule 2.2 in MISRA states that "source code shall only use /* ... */ style comments". Does any one know what is the rationale for this rule? what is wrong with // style comments?

Answer 1

MISRA 1998 and 2004 only support the C90 standard ("ANSI C"). In that standard, // comments are not allowed and code containing them will not compile on C90 compilers.

MISRA 2012 supports the C99 standard and // comments.

Answer 2

Further to Lundin's reply, MISRA-C:2012 (which covers C99) DOES allow // style comments