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- rand()
- getenv()
- strtok()
- strerror()
- asctime()
- ctime()
POSIX.1-2008 has a much longer list, in section 2.9.1 of the System Interfaces volume, of functions that are not required to be thread-safe.
Non Compliant Code Example
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| Code Block | ||
|---|---|---|
| ||
FILE* fd = fopen( filename, "r");
if (fd == NULL) {
char errmsg[BUFSIZ];
if (strerror_r( errno, errmsg, BUFSIZ) =!= -10) {
/* handle error */
}
printf("Could not open file because of %s\n", errmsg);
}
|
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| Wiki Markup |
|---|
\[[N1401-C1X Draft|http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1401.pdf]\] Section 7.21.2.1 rand() function, Section 7.21.4.6 getenv() function, Section 7.22.5.8 strtok() function, Section 7.22.6.2 strerror() function, Section 7.25.3.1 asctime() function, Section 7.25.3.2 ctime() function
\[[Historical information about POSIX.1 Thread Safety|http://www.unix.org/whitepapers/reentrant.html]\] |
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