While checking for non-regression in the gdb.threads part of the 
testsuite, I noticed one test fails with gcc4 since the argument of the 
main are removed by the compiler so don't appear when printing backtrace:
FAIL: gdb.threads/pthreads.exp: check backtrace from main thread

Either we can change the .exp file to avoid checking these arguments, or 
we can ensure compiler keeps them as proposed hereby.

-- 
Denis Pilat
STMicroelectronics