On 05/06/13 20:15, Ron Aaron wrote:
Compiling with "./configure CFLAGS='-g'" and then gdb src/vim, I get a crash
right at startup do to buffer overflow:
#4 0xb7644105 in __GI___fortify_fail (msg=0xb76a3648 "buffer overflow
detected") at fortify_fail.c:38
#5 0xb7642eba in __GI___chk_fail () at chk_fail.c:29
#6 0xb76421ed in __strcpy_chk (dest=dest@entry=0x82eb671 <vimvars+17> "c", src=0x81edf5d
"count", destlen=<optimized out>, destlen@entry=1)
at strcpy_chk.c:61
#7 0x0807920a in strcpy (__src=<optimized out>, __dest=0x82eb671 <vimvars+17>
"c") at /usr/include/i386-linux-gnu/bits/string3.h:105
#8 eval_init () at eval.c:851
#9 0x081ade34 in main (argc=1, argv=0xbffff754) at main.c:231
Rerunning w/ a breakpoint at the problem:
851 STRCPY(p->vv_di.di_key, p->vv_name);
(gdb) p p->vv_di
$1 = {di_tv = {v_type = 1 '\001', v_lock = 0 '\000', vval = {v_number = 0,
v_float = 0, v_string = 0x0, v_list = 0x0, v_dict = 0x0}},
di_flags = 0 '\000', di_key = ""}
(gdb) p p->vv_di.di_key
$2 = ""
(gdb) p p->vv_name
$3 = 0x81edf5d "count"
(gdb) n
*** buffer overflow detected ***: /home/ron/proj/2html-test/vim/src/vim
terminated
Which patchlevel? Which OS? Which featureset {Tiny|Small|Normal|Big|Huge}?
Best regards,
Tony.
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