SEI CERT C Coding Standard

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changes.mady.by.user Robert Seacord (Manager)

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Code Block
bgColor#FFcccc
langc
char* name; /* initialized externally */
char filename[128];
sprintf(filename, "%s.txt", name);
/* open filename * /

However, since because the sprintf() function makes no guarantees regarding the length of the string generated, a sufficiently-long string in name could generate a buffer overflow.

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Code Block
bgColor#ccccff
langc
char* name; /* initialized externally */
char filename[128];
snprintf(filename, sizeof( filename), "%s.txt", name);
/* open filename * /

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