htags segmentation fault

[Hideki IWAMOTO]

If htags is run in empty source tree, segmentation fault will happen.

address@hidden:/tmp/a>ls -l
total 0
address@hidden:/tmp/a>gtags -w
address@hidden:/tmp/a>htags -w
Segmentation fault (core dumped)
address@hidden:/tmp/a>gdb htags core.8402
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This GDB was configured as "i686-pc-linux-gnu"...Using host libthread_db 
library "/lib/tls/libthread_db.so.1".

Core was generated by `htags -w'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
#0  0x45627369 in vfprintf () from /lib/tls/libc.so.6
(gdb) bt
#0  0x45627369 in vfprintf () from /lib/tls/libc.so.6
#1  0x4563139f in fprintf () from /lib/tls/libc.so.6
#2  0x0804fc53 in makedefineindex (file=0x45713a14 " 9qEx\006", total=0, 
defines=0x808a170) at defineindex.c:270
#3  0x0804d8bc in main (argc=0, argv=0x8088ee0) at htags.c:1752
(gdb) up
#1  0x4563139f in fprintf () from /lib/tls/libc.so.6
(gdb) 
#2  0x0804fc53 in makedefineindex (file=0x45713a14 " 9qEx\006", total=0, 
defines=0x808a170) at defineindex.c:270
270                             fprintf(ALPHA, "%s\n", br);
(gdb) p ALPHA
$1 = (FILE *) 0x0
(gdb) 



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Hideki IWAMOTO  address@hidden