Initial signal

[Reuben Thomas]

Studying remote.c, I found the following comment:

  /* Stubs traditionally report SIGTRAP as initial signal,
    instead of signal 0.  Suppress it.  */

And indeed the remote stub I am working on, which was based on
stubs/sparc-stub.c, was sending SIGTRAP as its initial signal. So I changed
it to send 0, which works fine, of course.

However, I cannot find this documented anywhere in the relevant section of
GDB's manual; indeed, I cannot find any documentation of what the initial
signal should be. Am I overlooking something, or is it missing?

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