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Fix a bug whereby 'mformat' could end up passing uninitialized bytes
to write(2). This could be reproduced with:
mformat -C -f 1440 -L 16 -N 77777777 -i /tmp/x ::
where the output of /tmp/x would be non-deterministic.
Patch by Ludovic Courtès <ludo@gnu.org>.
--- mtools-4.0.23/mformat.c 2019-04-21 00:12:01.496116195 +0200
+++ mtools-4.0.23/mformat.c 2019-04-21 00:12:36.675967157 +0200
@@ -927,6 +927,7 @@ void mformat(int argc, char **argv, int
char *endptr;
+ memset(&boot.bytes, '\0', sizeof boot);
hs = hs_set = 0;
argtracks = 0;
argheads = 0;
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