Awatmath.2171
net.bugs.4bsd
utcsrgv!utzoo!decvax!watmath!kwlalonde
Tue Mar 30 20:59:38 1982
Grep bug
Grep recognises syntactically incorrect patterns, such as '[', and
prints a diagnostic.  It then goes ahead and tries to execute its compiled
pattern on the input, resulting in infinite loops and other uglies.
A fix is to exit after the diagnostic.

       diff oldgrep.c newgrep.c
       186a187
       >       exit(2);
                                               Ken Lalonde

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