AN3350 datasheet(146/185 Pages) STMICROELECTRONICS

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Pragmas for diagnostic messages

AN3350

146/185

Doc ID 018512 Rev 2

19.15

warn_filenamecaps_system

Controls the recognition of conflicts involving case-sensitive filenames within system

includes.

Syntax

#pragma warn_filenamecaps_system on | off | reset

Remarks

If you enable this pragma along with warn_filenamecaps, the compiler issues a warning

message when an #include directive capitalizes a filename within a system include

differently from the way the filename appears on a disk. It also detects use of “8.3” DOS

filenames in Windows® systems when a long filename is available. This pragma helps avoid

porting problems to operating systems with case-sensitive file names.

To check the spelling of system includes such as the following:

#include <file>

Use this pragma along with the warn_filenamecaps pragma.

By default, this pragma is off.

Note:

Some SDKs (Software Developer Kits) use “colorful” capitalization, so this pragma may

issue a lot of unwanted messages.

19.16

warn_hiddenlocals

Controls the recognition of a local variable that hides another local variable.

Syntax

#pragma warn_hiddenlocals on | off | reset

Remarks

When on, the compiler issues a warning message when it encounters a local variable that

hides another local variable. An example appears in Example 93.

Example 93 Example of hidden local variables warning

#pragma warn_hiddenlocals on

void func(int a)

{

int a; /* WARNING: this 'a' obscures argument 'a'.

}

By default, this setting is off.

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