If you have any errors, and you will with gcc, the test suite will exit with Error 2 and fail to make check-target. You need to look at each of the unexpected failures and determine they may indicate a problem. If there are more than a two or three, you're definitely going to have problems. If there are only a couple, you need to determine what caused them (slow machine caused the test to time out, etc.). Without knowing which tests failed and why, no one can really tell you if it is OK to continue.
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