AN3350 datasheet(145/185 Pages) STMICROELECTRONICS

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AN3350

Pragmas for diagnostic messages

Doc ID 018512 Rev 2

145/185

Example 91 Example of empty declaration in C++

#pragma warn_emptydecl on

extern "C" {

}; /* WARNING */

By default, this pragma is disabled.

19.13

warn_extracomma

Controls the recognition of superfluous commas in enumerations.

Syntax

#pragma warn_extracomma on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message when it encounters a

trailing comma in enumerations. For example,Example 92 is acceptable source code but

generates a warning message when you enable this setting.

Example 92 Warning about extra commas

#pragma warn_extracomma on

enum { mouse, cat, dog, };

/* WARNING: compiler expects an identifier after final comma. */

The compiler ignores terminating commas in enumerations when compiling source code

that conforms to the ISO/IEC 9899-1999 (“C99”) standard.

By default, this pragma is disabled.

19.14

warn_filenamecaps

Controls the recognition of conflicts involving case-sensitive filenames within user includes.

Syntax

#pragma warn_filenamecaps on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message when an #include

directive capitalizes a filename within a user include differently from the way the filename

appears on a disk. It also detects use of “8.3” DOS filenames in Windows® operating

systems when a long filename is available. Use this pragma to avoid porting problems to

operating systems with case-sensitive file names.

By default, this pragma only checks the spelling of user includes such as the following:

#include "file"

For more information on checking system includes, see warn_filenamecaps_system.

By default, this pragma is off.

AN3350 Datasheet(PDF) 145 Page - STMicroelectronics