When data is generated by "normal" T tracers, it should be fine.
But it might come from unknown sources and then content might be
"strange". So let's validate input data a bit more.
The way allocation is done (granularity of 64KiB) makes a crash more
difficult to achieve, but if a trace is exactly 64KiB, we miss 4 bytes
in the realloc and then anything may happen.
There is already common/utils/config.h. This file(name) is hardcoded as
it is included into asn1c, and cannot be renamed. To avoid a name clash
and confusing, we rename T's config.h/c to configuration.h/c.
Whenever the value T_BUFFER_MAX changes, the tracers had to
be recompiled. The only reason why it was needed is because we
used some fixed size buffers to read events. This commit removes
this restriction.
Also, with the basic simulator, this value T_BUFFER_MAX now comes
with an #ifdef which would have required some special hackish-level
tricks in the tracers, which is not good.
Let's just allocate memory when needed.
Cedric Roux