Showing content from https://en.cppreference.com/w/cpp/language/../algorithm/../../cpp/../c/language/../error.html below:
Error handling - cppreference.com
[edit] Error numbers [edit] Assertions aborts the program if the user-specified condition is not true. May be disabled for release builds
(function macro) [edit] issues a compile-time diagnostic if the value of a constant expression is false
(keyword macro) Bounds checking
The standard library provides bounds-checked versions of some existing functions (gets_s, fopen_s, printf_s, strcpy_s, wcscpy_s, mbstowcs_s, qsort_s, getenv_s, etc). This functionality is optional and is only available if __STDC_LIB_EXT1__ is defined. The following macros and functions support this functionality.
a typedef for the type int, used to self-document functions that return errno values
(typedef) a typedef for the same type as size_t, used to self-document functions that range-check their parameters at runtime
(typedef) largest acceptable size for bounds-checked functions, expands to either constant or variable which may change at runtime (e.g. as the currently allocated memory size changes)
(macro variable) set the error callback for bounds-checked functions
(function) [edit] abort callback for the bounds-checked functions
(function) [edit] ignore callback for the bounds-checked functions
(function) [edit]
Note: implementations of bounds-checked functions are available as open-source libraries Safe C and Slibc, and as part of Watcom C. There is also an incompatible set of bounds-checked functions available in Visual Studio.
(since C11) [edit] Notes
Since C23, static_assert is itself a keyword, which may also be a predefined macro, so <assert.h> no longer provides it.
[edit] References Extended content
- C23 standard (ISO/IEC 9899:2024):
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- 7.2 Diagnostics <assert.h> (p: TBD)
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- 7.5 Errors <errno.h> (p: TBD)
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- 7.19 Common definitions <stddef.h> (p: TBD)
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- 7.20 Integer types <stdint.h> (p: TBD)
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- 7.21 Input/output <stdio.h> (p: TBD)
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- 7.22 General utilities <stdlib.h> (p: TBD)
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- K.3.1.3 Use of errno (p: TBD)
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- K.3.4/2 RSIZE_MAX (p: TBD)
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- 7.31.3 Errors <errno.h> (p: TBD)
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- 7.31.10 Integer types <stdint.h> (p: TBD)
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- 7.31.11 Input/output <stdio.h> (p: TBD)
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- 7.31.12 General utilities <stdlib.h> (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
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- 7.2 Diagnostics <assert.h> (p: TBD)
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- 7.5 Errors <errno.h> (p: TBD)
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- 7.19 Common definitions <stddef.h> (p: TBD)
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- 7.20 Integer types <stdint.h> (p: TBD)
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- 7.21 Input/output <stdio.h> (p: TBD)
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- 7.22 General utilities <stdlib.h> (p: TBD)
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- K.3.1.3 Use of errno (p: TBD)
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- K.3.4/2 RSIZE_MAX (p: TBD)
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- 7.31.3 Errors <errno.h> (p: TBD)
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- 7.31.10 Integer types <stdint.h> (p: TBD)
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- 7.31.11 Input/output <stdio.h> (p: TBD)
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- 7.31.12 General utilities <stdlib.h> (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
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- 7.2 Diagnostics <assert.h> (p: 186-187)
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- 7.5 Errors <errno.h> (p: 205)
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- 7.19 Common definitions <stddef.h> (p: 288)
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- 7.20 Integer types <stdint.h> (p: 289-295)
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- 7.21 Input/output <stdio.h> (p: 296-339)
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- 7.22 General utilities <stdlib.h> (p: 340-360)
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- K.3.1.3 Use of errno (p: 584)
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- K.3.4/2 RSIZE_MAX (p: 585)
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- 7.31.3 Errors <errno.h> (p: 455)
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- 7.31.10 Integer types <stdint.h> (p: 456)
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- 7.31.11 Input/output <stdio.h> (p: 456)
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- 7.31.12 General utilities <stdlib.h> (p: 456)
- C99 standard (ISO/IEC 9899:1999):
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- 7.2 Diagnostics <assert.h> (p: 169)
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- 7.5 Errors <errno.h> (p: 186)
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- 7.26.3 Errors <errno.h> (p: 401)
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- 7.26.8 Integer types <stdint.h> (p: 401)
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- 7.26.9 Input/output <stdio.h> (p: 402)
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- 7.26.10 General utilities <stdlib.h> (p: 402)
- C89/C90 standard (ISO/IEC 9899:1990):
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- 4.2 DIAGNOSTICS <assert.h>
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- 4.13.6 Input/output <stdio.h>
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- 4.13.7 General utilities <stdlib.h>
[edit] See also
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