Using Pragmas

The #pragma preprocessor directive specifies option settings to the compiler to control the compiler and linker's code generation.

• Checking Pragma Settings
  The preprocessor function __option() returns the state of pragma settings at compile-time.
• Saving and Restoring Pragma Settings
  There are some occasions when you would like to apply pragma settings to a piece of source code independently from the settings in the rest of the source file.
• Determining Which Settings Are Saved and Restored
  Not all pragma settings are saved and restored by pragmas push and pop . Pragmas that do not change compiler settings are not affected by push and pop .
• Invalid Pragmas
  If you enable the compiler's setting for reporting invalid pragmas, the compiler issues a warning when it encounters a pragma it does not recognize.
• Pragma Scope
  The scope of a pragma setting is limited to a compilation unit (a source code file and the files that it includes).