SEI CERT C Coding Standard

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If a file with the same name as a standard file name is placed in the search path for included source files, the behavior is undefined.

The standard headers are:

<assert.h>

<complex.h>

<ctype.h>

<errno.h>

<fenv.h>

<float.h>

<inttypes.h>

<iso646.h>

<limits.h>

<locale.h>

<math.h>

<setjmp.h>

<signal.h>

<stdarg.h>

<stdbool.h>

<stddef.h>

<stdint.h>

<stdio.h>

<stdlib.h>

<string.h>

<tgmath.h>

<time.h>

<wchar.h>

<wctype.h>

Risk Assessment

Using header names that conflict with the C standard library functions can result in not including the intended file.

Recommendation

Severity

Likelihood

Remediation Cost

Priority

Level

PRE04-A

1 (low)

1 (unlikely)

3 (low)

P3

L3

Search for vulnerabilities resulting from the violation of this rule on the CERT website.

References

Wiki Markup
\[[ISO/IEC 9899-1999|AA. C References#ISO/IEC 9899-1999]\] Section 7.1.2, "Standard Headers"

DCL03 NCCE 1      01. Preprocessor (PRE)       PRE05-A. Use parentheses around any macro replacement list containing operators