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All occurrences in a source file of the following sequences of three characters (that is, trigraph sequences) are replaced with the corresponding single character.

??=

#

 

??)

]

 

??!

|

??(

[

 

??'

^

 

??>

}

??/

\

 

??<

{

 

??-

~

 

Noncompliant Code Example

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ToolVersionCheckerDescription

ECLAIR

Include Page
ECLAIR_V
ECLAIR_V

dtrigrafCC2.PRE07

Fully implemented
GCC
Include Page
GCC_V
GCC_V
 

Can detect violation of this recommendation when the -Wtrigraphs flag is used

LDRA tool suite

Include Page
LDRA_V
LDRA_V

81 S

Fully implemented
PRQA QA-C
Include Page
PRQA_V
PRQA_V
3601Partially implemented

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