#include <string.h>

char *strsignal(int signum);


Partially implemented


IEEE Std 1003.1-2017


The strsignal() function shall map the signal number in signum to an implementation-defined string and shall return a pointer to it. It shall use the same set of messages as the psignal() function.

The application shall not modify the string returned. The returned pointer might be invalidated, or the string content might be overwritten by a subsequent call to strsignal() or setlocale(). The returned pointer might also be invalidated if the calling thread is terminated.

The contents of the message strings returned by strsignal() should be determined by the setting of the LC_MESSAGES category in the current locale.

The implementation shall behave as if no function defined in this standard calls strsignal().

Since no return value is reserved to indicate an error, an application wishing to check for error situations should set errno to 0, then call strsignal(), then check errno.

The strsignal() function need not be thread-safe.

Return value#

Upon successful completion, strsignal() shall return a pointer to a string. Otherwise, if signum is not a valid signal number, the return value is unspecified.


No errors are defined.



Known bugs#


See Also#

  1. Standard library functions

  2. Table of Contents