[MacPorts] #33468: gdb update 7.3 to 7.4

[MacPorts]

#33468: gdb update 7.3 to 7.4
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 Reporter:  hbemail@…          |       Owner:  dweber@…           
     Type:  update             |      Status:  new                
 Priority:  Low                |   Milestone:                     
Component:  ports              |     Version:  2.0.4              
 Keywords:                     |        Port:  gdb                
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Comment(by jwiegley@…):

 I've got GDB 7.4.1 built and working, but the second time I try to "run"
 anything, it crashes with report of a double-free.  So far, this looks
 like a real bug in GDB that is only being detected because of OS X's
 memory tracking.  Has anyone else run into this?

 I haven't any success yet at running valgrind on gdb, unfortunately.  And
 I can't build it with Clang 3.1 either, to use -faddress-sanitizer.

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Ticket URL: <https://trac.macports.org/ticket/33468#comment:6>
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