set_constraint_handler_s, constraint_handler_t
| Defined in header <stdlib.h>
|
||
| constraint_handler_t set_constraint_handler_s( constraint_handler_t handler ); |
(since 哋它亢11) | |
Configures the handler to be called by all MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 43 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE on a runtime constraint violation or restores the default handler (if handler is a null pointer)
The handler must be a pointer to function of type constraint_handler_t, which is defined as
| Defined in header <stdlib.h>
|
||
| typedef void (*constraint_handler_t)( const char *restrict msg, void *restrict ptr, |
(since 哋它亢11) | |
MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 42 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE
errno_tIf set_constraint_handler_s is never called, the default handler is implementation-defined: it may be abort_handler_s, ignore_handler_s, or some other implementation-defined handler.
- As with all bounds-checked functions,
set_constraint_handler_sandconstraint_handler_tare only guaranteed to be available if __STDC_LIB_EXT1__ is defined by the implementation and if the user defines __STDC_WANT_LIB_EXT1__ to the integer constant 1 before including<stdlib.h>.
Parameters
| handler | - | pointer to function of type constraint_handler_t or a null pointer |
Return value
A pointer to the previously-installed runtime constraints handler. (note: this pointer is never a null pointer because calling set_constraint_handler_s(MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 40 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE) sets up the system default handler)
Example
#define __STDC_WANT_LIB_EXT1__ 1 #include <string.h> #include <stdio.h> #include <stdlib.h> int main(void) { #ifdef __STDC_LIB_EXT1__ char dst[2]; set_constraint_handler_s(ignore_handler_s); int r = strcpy_s(dst, sizeof dst, "Too long!"); MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 39 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE("dst = \"%s\", r = %d\n", dst, r); set_constraint_handler_s(abort_handler_s); r = strcpy_s(dst, sizeof dst, "Too long!"); MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 38 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE("dst = \"%s\", r = %d\n", dst, r); #endif }
MYMEMORY WARNING: YOU USED ALL AVAILABLE FREE TRANSLATIONS FOR TODAY. NEXT AVAILABLE IN 11 HOURS 47 MINUTES 36 SECONDS VISIT HTTPS://MYMEMORY.TRANSLATED.NET/DOC/USAGELIMITS.PHP TO TRANSLATE MORE
dst = "", r = 22 abort_handler_s was called in response to a runtime-constraint violation. The runtime-constraint violation was caused by the following expression in strcpy_s: (s1max <= (s2_len=strnlen_s(s2, s1max)) ) (in string_s.c:62) Note to end users: This program was terminated as a result of a bug present in the software. Please reach out to your software's vendor to get more help. Aborted
References
- 哋它亢11 standard (ISO/IEC 9899:2011):
- K.3.6/2 constraint_handler_t (p: 604)
- K.3.6.1.1 The set_constraint_handler_s function (p: 604-605)
See also
| (哋它亢11) |
abort callback for the bounds-checked functions (function) |
| (哋它亢11) |
ignore callback for the bounds-checked functions (function) |