Issue510868
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Created on 2002-01-30 19:33 by sharadinfozen, last changed 2022-04-10 16:04 by admin. This issue is now closed.
Files | ||||
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File name | Uploaded | Description | Edit | |
makeconfig.log | sharadinfozen, 2002-01-30 19:33 | Config.log & Make.log all shmucked together. | ||
gdbpyth | sharadinfozen, 2002-01-31 21:10 | gdb python output | ||
gdbout | sharadinfozen, 2002-02-01 16:04 | a better gdb python output | ||
gdbout2 | sharadinfozen, 2002-02-01 22:15 | Backtrace on gdb python output | ||
backtrace.feb4 | sharadinfozen, 2002-02-04 22:03 | backtrace log for failed make Feb 4. |
Messages (12) | |||
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msg9044 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-01-30 19:33 | |
I'm building python2.2 on a Solaris2.7 box, an Ultra- 10. I get a segmentation fault error at 'xreadlines' when I try the make. I am not sure why. Logs of the configuration script & make are attached. (in one concatenated file, I could not tell how to upload more than one file). Any help will be greatly appreciated. thanks! -sharad. |
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msg9045 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-01-31 17:35 | |
Logged In: YES user_id=21627 Can you attach to Python with gdb and see why it crashes? |
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msg9046 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-01-31 21:09 | |
Logged In: YES user_id=443851 I did try gdb on the python binary, but got nothing interesting (you can see in the file gdbpyth). thanks, -sharad. |
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msg9047 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-02-01 10:36 | |
Logged In: YES user_id=21627 It would be good if you could analyse this with gdb further. I recommend to obtain a more recent copy of gdb (e.g. gdb 5.0), in particular one compiled for your system (the one you have is compiled for Solaris 2.4). You can get get binaries from sunfreeware.com (although they don't have gdb 5 for Solaris 7; you might want to try the 4.18 that they do have). The important thing is that you need to run the setup.py under gdb. To do this, please invoke the setup.py line manually. I.e. if the makefile invoke ENV1=val1 ENV2=val2 python-command python-options arguments you will need to perform the following commands ENV1=val1 ENV2=val2 export ENV1 ENV2 gdb python-command run python-options arguments As a side point, what is the exact gcc version that you are usingq (gcc -v)? If that also is not a gcc for Solaris 7, I recommend to re-install the compiler, or use the system compiler. |
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msg9048 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-02-01 16:04 | |
Logged In: YES user_id=443851 Thanks for the gdb tip, I've switched to the solaris7 pkg for gdb. The version info for gcc does not explicitly list what flavor of Solaris it's built for, but the version number is 3.0.3, and it reads it's specs from /usr/local/lib/gcc-lib/sparc-sun- solaris2.7/3.0.3/specs, which leads me to believe that it's built for solaris7. Anywho, after some freaking around with env var's & gdb, I got the following output (see gdbout). It leads me to believe that the problem is in /usr/lib/libc.so.1, but I'm not sure how to replace/update this lib, or even if it is indeed the source of my python misery. Any input or guidance would be appreciated. thanks, -sharad. |
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msg9049 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-02-01 20:26 | |
Logged In: YES user_id=21627 Ok, gcc 3.0.3 itself could be a source of problems, but I won't accuse that compiler prematurely (you might want to try 2.95.x, though, if you have that readily available). As for the gdb analysis: that it crashes is strlen is not the problem; strlen is the innocent C library function that computes the length of the string. Please invoke the command "bt" when it crashes; that should tell you the backtrace (i.e. where strlen is called from) - please report that. If you want to investigate further: "up" brings you up a stack-level, and "p varname" prints a variable. This approach to debugging may take many more rounds, so I'd understand if you are ready to give up (sunfreeware has 2.1.1 binaries). It's just that it builds fine for me (on Solaris 8, using gcc 2.95.2), so I have no clue as to what the problem might be. Did you pass any options to ./configure? |
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msg9050 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-02-01 22:15 | |
Logged In: YES user_id=443851 I've done a full backtrace on it (see gdbout2), but I really don't know how to interpret the results. From what I can tell, the problem lies in this area: #1 0x20f00 in PyString_FromString ( str=0x7e1138 <Address 0x7e1138 out of bounds>) at Objects/stringobject.c:112 #2 0xad7dc in PyDict_SetItemString (v=0x7e1138, key=0x7e1138 <Address 0x7e1138 out of bounds>, item=0x17d350) at Objects/dictobject.c:1879 Unfotunately, I can't tell what's going wrong in these source files, and when I tried 'p str' on the var referenced in line #1, I get: $1 = 0x7e1138 <Address 0x7e1138 out of bounds> which does not explain much to me. I have tried the package at SunFreeWare's site, but my developer needs the 'HTTPSConnection' from 'httplib', which apparently is _not_ built into the sunfreeware package. So, any input, again, would be greatly appreciated. I realise you must be a busy guy, thanks for all of your help & patience! -sharad. |
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msg9051 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-02-02 11:38 | |
Logged In: YES user_id=21627 That looks very much like a miscompilation. Notice that initreadline is supposed to pass a first string of "readline" to InitModule4; in the gdb backtrace, we see an empty string. Likewise, the invalid address comes from the methods argument to InitModule4, fetching ml_name. These are all static strings, compiled into an array (namely, readline.c:readline_methods). So I really recommend to downgrade the compiler (or use the Sun system compiler if you have it); if you are interested in a work-around, here are two options: - build readline statically into the Python interpreter. Do so by uncommenting the readline line in Modules/Setup (adding libraries as necessary) - do not build the readline module at all; do so by adding 'readline' into setup.py:disabled_module_list. |
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msg9052 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-02-04 22:02 | |
Logged In: YES user_id=443851 I tried downgrading gcc to 2.95.3, however, it still craps out at the same place, and according to backtrace, it is still quitting in the same place. I've attached the logs. We've successfully built python on another box, keeping the project that was in jeopardy moving forward, however, I would still very much like to find out how to install python correctly on this problem box. thanks, -sharad. |
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msg9053 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-03-27 20:59 | |
Logged In: YES user_id=21627 Can you offer an account on this machine? I'd like to investigate it "life". |
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msg9054 - (view) | Author: Sharad Satsangi (sharadinfozen) | Date: 2002-03-28 16:37 | |
Logged In: YES user_id=443851 Thanks for the followup, but due to the nature of the project this box is involved in, and my company's policies, I would get in serious poo-poo if I let you in. I think we will just have to concede on this, and move on. thanks again. -sharad. |
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msg9055 - (view) | Author: Martin v. Löwis (loewis) * ![]() |
Date: 2002-03-28 16:43 | |
Logged In: YES user_id=21627 Ok, closing it as not-reproducable. |
History | |||
---|---|---|---|
Date | User | Action | Args |
2022-04-10 16:04:56 | admin | set | github: 36002 |
2002-01-30 19:33:22 | sharadinfozen | create |