Pragma Forms

Pragmas are not part of any C++ standard.

The various forms of a CC pragma are:

#pragma keyword
#pragma keyword
 ( a [ , a
 ]  ) [ , keyword ( a [ , a ] ... ) ] ,... 
#pragma sun keyword

The variable keyword identifies the specific directive; a indicates an argument.

The pragma keywords recognized by CC are:

• -align - Makes the parameter variables memory-aligned to a specified number of bytes, overriding the default.

• init - Marks a specified function as an initialization function.

• fini - Marks a specified function as a finalization function.

• ident - Places a specified string in the .comment section of the executable.

• pack (n) - Controls the layout of structure offsets. The value of n is a number--0, 1, 2, 4, or 8--that specifies the worst-case alignment desired for any structure member.

• unknown_control_flow - Specifies a list of routines that violate the usual control flow properties of procedure calls.

• weak - Defines weak symbol bindings.