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44 .Nd exit-on-failure wrapper functions
46 The roken library (libroken, -lroken)
48 .Fd #include <roken.h>
50 .Fn ecalloc "size_t number" "size_t size"
52 .Fn emalloc "size_t sz"
54 .Fn eread "int fd" "void *buf" "size_t nbytes"
56 .Fn erealloc "void *ptr" "size_t sz"
58 .Fn esetenv "const char *var" "const char *val" "int rewrite"
60 .Fn estrdup "const char *str"
62 .Fn ewrite "int fd" "const void *buf" "size_t nbytes"
64 These functions do the same as the ones without the
66 prefix, but if there is an error they will print a message with
72 this is also true for partial data.
74 This is useful in applications when there is no need for a more
75 advanced failure mode.