Generate call to C's assert failure function. One of exp, emsg, or str must not be null.
context
location to use for assert message
if not null expression to test (not evaluated, but converted to a string)
if not null then informative message to be computed at run time
if not null then informative message string
generated call
See Implementation
Generate call to C's assert failure function. One of exp, emsg, or str must not be null.