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7 .\" by Christos Zoulas.
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48 .Nd error-checked utility functions
53 .Ft void (*)(int, const char *, ...)
54 .Fn esetfunc "void (*)(int, const char *, ...)"
56 .Fn easprintf "char ** restrict str" "const char * restrict fmt" "..."
58 .Fn efopen "const char *p" "const char *m"
60 .Fn ecalloc "size_t n" "size_t s"
62 .Fn emalloc "size_t n"
64 .Fn erealloc "void *p" "size_t n"
66 .Fn ereallocarr "void *p" "size_t n" "size_t s"
68 .Fn estrdup "const char *s"
70 .Fn estrndup "const char *s" "size_t len"
72 .Fn estrlcat "char *dst" "const char *src" "size_t len"
74 .Fn estrlcpy "char *dst" "const char *src" "size_t len"
76 .Fn estrtoi "const char * nptr" "int base" "intmax_t lo" "intmax_t hi"
78 .Fn estrtou "const char * nptr" "int base" "uintmax_t lo" "uintmax_t hi"
80 .Fn evasprintf "char ** restrict str" "const char * restrict fmt" "..."
98 operate exactly as the corresponding functions that do not start with an
100 except that in case of an error, they call
101 the installed error handler that can be configured with
104 For the string handling functions, it is an error when the destination
105 buffer is not large enough to hold the complete string.
106 For functions that allocate memory or open a file, it is an error when
107 they would return a null pointer.
108 The default error handler is
112 returns the previous error handler function.
115 error handler will just call
139 functions were added in