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     ASSERT(2)                                               ASSERT(2)

     NAME
          assert - check program invariants

     SYNOPSIS
          #include <u.h>
          #include <libc.h>

          #define assert(cond) if(cond);else _assert("cond")

          void _assert(char* cond)

     DESCRIPTION
          Assert is a preprocessor macro that (via _assert) prints a
          message and calls abort when cond is false.

     SOURCE
          /sys/src/libc/port/_assert.c

     Page 1                       Plan 9            (printed 10/24/25)