[Gambas-devel] gb.net.curl crashes with signal #11, segmentation fault

[Sebastian Kulesz]

Hi!

I'm using Archlinux, after upgrading curl (7.28.1-1 -> 7.29.0-1) i am
getting a crash every time a project (of any type) that loads the
gb.net.curl component ends. Here is the backtrace from gdb:

(gdb) run
Starting program: /usr/bin/gbx3
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff57ae700 (LWP 3253)]
[Thread 0x7ffff57ae700 (LWP 3253) exited]
Invalid signature

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff62964a0 in curl_multi_cleanup () from /usr/lib/libcurl.so.4
(gdb) bt
#0  0x00007ffff62964a0 in curl_multi_cleanup () from /usr/lib/libcurl.so.4
#1  0x000000000040b03b in EXEC_native () at gbx_exec.c:1332
#2  0x000000000040b5fd in EXEC_public_desc (class=0x0, class at ...703...=0x6b4f78,
object=0x61, object at ...703...=0x0, desc=0x61, nparam=7099400, nparam at ...703...=0)
    at gbx_exec.c:1572
#3  0x000000000040b682 in EXEC_public (class=class at ...703...=0x6b4f78,
object=object at ...703...=0x0, name=name at ...703...=0x43cda2 "_exit",
nparam=nparam at ...703...=0)
    at gbx_exec.c:1595
#4  0x000000000040f252 in exit_class (class=0x6b4f78, native=<optimized
out>) at gbx_class.c:109
#5  exit_class (native=1 '\001', class=0x6b4f78) at gbx_class.c:287
#6  CLASS_clean_up (silent=silent at ...703...=0 '\000') at gbx_class.c:386
#7  0x000000000042535a in main_exit (silent=0 '\000', silent at ...703...=-19
'\355') at gbx.c:128
#8  0x0000000000404639 in main (argc=1, argv=0x7fffffffe1c8) at gbx.c:429

(gdb) bt full
#0  0x00007ffff62964a0 in curl_multi_cleanup () from /usr/lib/libcurl.so.4
No symbol table info available.
#1  0x000000000040b03b in EXEC_native () at gbx_exec.c:1332
        desc = 0x7ffff66f9f20 <CCurlDesc+192>
        nparam = 0
        object = 0x0
        use_stack = 0 '\000'
        i = <optimized out>
        n = <optimized out>
        nm = <optimized out>
        value = <optimized out>
        sign = <optimized out>
        error = <optimized out>
        ret = {type = 3, _boolean = {type = 3, value = 34}, _byte = {type =
3, value = 34}, _short = {type = 3, value = 34}, _integer = {type = 3,
            value = 34}, _long = {type = 3, value = 34}, _single = {type =
3, value = 4.76441478e-44}, _float = {type = 3,
            value = 1.6798231958602383e-322}, _date = {type = 3, date = 34,
time = 0}, _string = {type = 3, addr = 0x22 <Address 0x22 out of bounds>,
            start = 4253865, len = 9}, _pointer = {type = 3, value = 0x22
<Address 0x22 out of bounds>}, _function = {type = 3, class = 0x22,
            object = 0x90040e8a9, kind = 120 'x', defined = 79 'O', index =
107}, _variant = {type = 3, vtype = 34, value = {_boolean = -87 '\251',
              _byte = 169 '\251', _short = -5975, _integer = 4253865, _long
= 38658959529, _single = 5.96093449e-39, _float = 1.9100063807245997e-313,
              _date = {date = 4253865, time = 9}, _string = 0x90040e8a9
<Address 0x90040e8a9 out of bounds>, _pointer = 0x90040e8a9, _object =
0x90040e8a9,
              data = 38658959529}}, _class = {type = 3, class = 0x22, super
= 0x90040e8a9}, _object = {class = 0x3, object = 0x22, super =
0x90040e8a9},
          _void = {type = 3, ptype = 34, value = {38658959529, 7032696}}}
#2  0x000000000040b5fd in EXEC_public_desc (class=0x0, class at ...703...=0x6b4f78,
object=0x61, object at ...703...=0x0, desc=0x61, nparam=7099400, nparam at ...703...=0)
    at gbx_exec.c:1572
No locals.
#3  0x000000000040b682 in EXEC_public (class=class at ...703...=0x6b4f78,
object=object at ...703...=0x0, name=name at ...703...=0x43cda2 "_exit",
nparam=nparam at ...703...=0)
    at gbx_exec.c:1595
        desc = <optimized out>
#4  0x000000000040f252 in exit_class (class=0x6b4f78, native=<optimized
out>) at gbx_class.c:109
No locals.
#5  exit_class (native=1 '\001', class=0x6b4f78) at gbx_class.c:287
No locals.
#6  CLASS_clean_up (silent=silent at ...703...=0 '\000') at gbx_class.c:386
        n = <optimized out>
        nc = 4
        nb = <optimized out>
        class = 0x6b4f78
#7  0x000000000042535a in main_exit (silent=0 '\000', silent at ...703...=-19
'\355') at gbx.c:128
        __err = <optimized out>
        __err_context = {prev = 0x0, handler = 0x0, info = {code = 0
'\000', native = 0 '\000', free = -1 '\377', _reserved = -1 '\377', cp =
0x0,
            fp = 0x0, pc = 0x31b46c48413b6c8b, msg = 0xce4b9336b8076c8b
<Address 0xce4b9336b8076c8b out of bounds>}, env = {{__jmpbuf = {0,
                -3581606660242051957, 4212308, 140737488347584, 0, 0,
3581606661264731275, -3581607229822243701}, __mask_was_saved = 0,
__saved_mask = {
                __val = {0, 16, 0, 7109608, 1, 1, 4212308, 140737488347584,
0, 1, 0, 1, 4212308, 0, 1, 4212308}}}}, ret = 0 '\000'}
#8  0x0000000000404639 in main (argc=1, argv=0x7fffffffe1c8) at gbx.c:429
        startup = 0x6c7d88
        i = 1
        n = 7099400
        file = 0x4390ed "."
        ret = 0
(gdb)

I read the curl webpage, but saw no info about breaking changes. The
component works perfectly, it just shows a message at the end of the
execution that it crashed.
Let me know if you need me to compile curl with debugging symbols too.

Thanks!
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