Here is the error message: *** glibc detected *** formail: free(): invalid next size (fast): 0x0000000001ab46e0 *** ======= Backtrace: ========= /lib/libc.so.6(+0x71e16)[0x7f19d723ae16] /lib/libc.so.6(cfree+0x6c)[0x7f19d723fb8c] formail[0x402a95] /lib/libc.so.6(__libc_start_main+0xfd)[0x7f19d71e7c8d] formail[0x4011b9] ======= Memory map: ======== 00400000-00409000 r-xp 00000000 09:02 1254127 /usr/bin/formail 00608000-00609000 rw-p 00008000 09:02 1254127 /usr/bin/formail 01ab4000-01ad5000 rw-p 00000000 00:00 0 [heap] 7f19d0000000-7f19d0021000 rw-p 00000000 00:00 0 7f19d0021000-7f19d4000000 ---p 00000000 00:00 0 7f19d6fb3000-7f19d6fc9000 r-xp 00000000 09:02 3514370 /lib/libgcc_s.so.1 7f19d6fc9000-7f19d71c8000 ---p 00016000 09:02 3514370 /lib/libgcc_s.so.1 7f19d71c8000-7f19d71c9000 rw-p 00015000 09:02 3514370 /lib/libgcc_s.so.1 7f19d71c9000-7f19d7322000 r-xp 00000000 09:02 3516399 /lib/libc-2.11.3.so 7f19d7322000-7f19d7521000 ---p 00159000 09:02 3516399 /lib/libc-2.11.3.so 7f19d7521000-7f19d7525000 r--p 00158000 09:02 3516399 /lib/libc-2.11.3.so 7f19d7525000-7f19d7526000 rw-p 0015c000 09:02 3516399 /lib/libc-2.11.3.so 7f19d7526000-7f19d752b000 rw-p 00000000 00:00 0 7f19d752b000-7f19d75ab000 r-xp 00000000 09:02 3516412 /lib/libm-2.11.3.so 7f19d75ab000-7f19d77ab000 ---p 00080000 09:02 3516412 /lib/libm-2.11.3.so 7f19d77ab000-7f19d77ac000 r--p 00080000 09:02 3516412 /lib/libm-2.11.3.so 7f19d77ac000-7f19d77ad000 rw-p 00081000 09:02 3516412 /lib/libm-2.11.3.so 7f19d77ad000-7f19d77cb000 r-xp 00000000 09:02 3516395 /lib/ld-2.11.3.so 7f19d79b8000-7f19d79bb000 rw-p 00000000 00:00 0 7f19d79c6000-7f19d79ca000 rw-p 00000000 00:00 0 7f19d79ca000-7f19d79cb000 r--p 0001d000 09:02 3516395 /lib/ld-2.11.3.so 7f19d79cb000-7f19d79cc000 rw-p 0001e000 09:02 3516395 /lib/ld-2.11.3.so 7f19d79cc000-7f19d79cd000 rw-p 00000000 00:00 0 7fff63e87000-7fff63e9c000 rw-p 00000000 00:00 0 [stack] 7fff63fff000-7fff64000000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] Aborted
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