3.0 regression: gcov does not work

[Brad Lucier]

Right now, I can't get gcov on alpha to work at all in 3.0
on any moderately sized problem---it just aborts.
This is with or without using computed gotos.  I previously
reported some similar things in optimization/1831 and c/1824.

So the -ftest-coverage and -fprofile-arcs are fairly useless
for me right now, and this is definitely a regression from
gcc-2.95.*.

Brad Lucier