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Questions tagged [glibc]

The GNU C library is used as the C library in the GNU system and most systems with the Linux kernel. It defines the "system calls" and other basic facilities such as open, malloc, printf, exit, etc.

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What does 'corrupted double-linked list' mean

I've recently gotten the following error from my PHP: WARNING: [pool www] child 42475 said into stderr: "*** glibc detected *** php-fpm: pool www: corrupted double-linked list: 0x00000000013fe680 ***" I'm not very bothered by this issue, and not…
replay
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/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

When I exectued command to install application following error accured: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory I was not aware of how to fix this problem, to find out resolution I searched for solotutions on net and…
vijay
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How does malloc work in a multithreaded environment?

Does the typical malloc (for x86-64 platform and Linux OS) naively lock a mutex at the beginning and release it when done, or does it lock a mutex in a more clever way at a finer level, so that lock contention is reduced for concurrent calls? If it…
pythonic
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What's the meaning of the %m formatting specifier?

The output for this code printed out ‘Success’. printf("%m\n");
Manuel
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building a .so that is also an executable

So everyone probably knows that glibc's /lib/libc.so.6 can be executed in the shell like a normal executable in which cases it prints its version information and exits. This is done via defining an entry point in the .so. For some cases it could be…
user175104
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What is __i686.get_pc_thunk.bx? Why do we need this call?

When I disassemble my small function, I happened to see this call call 0xf60d2f47 <__i686.get_pc_thunk.bx>. I have no clue why I need this call in my program. Any explanation would be helpful.
Thangaraj
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Understanding "corrupted size vs. prev_size" glibc error

I have implemented a JNA bridge to FDK-AAC. Source code can be found in here When bench-marking my code, I can get hundreds of successful runs on the same input, and then occasionally a C-level crash that'll kill the entire process, causing a…
Sheinbergon
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Pthread mutex assertion error

I'm encountering the following error at unpredictable times in a linux-based (arm) communications application: pthread_mutex_lock.c:82: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed. Google turns up a lot of references to that…
Dave Causey
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Error while importing Tensorflow in Python 2.7 in Ubuntu 12.04. 'GLIBC_2.17 not found'

I have installed the Tensorflow bindings with python successfully. But when I try to import Tensorflow, I get the follwoing error. ImportError: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.17' not found (required by…
Tanvir
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What is _GLIBCXX_USE_NANOSLEEP all about?

A preprocessor macro called _GLIBCXX_USE_NANOSLEEP appears in two standard header files: c++/4.7.1/x86_64-unknown-linux-gnu/bits/c++config.h c++/4.7.1/thread In a default build of GCC 4.7.1 (Linux, 64-bit) the only thing c++config.h includes is…
jogojapan
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GLIBCXX versions

If I compile a C++ program on my machine, and run it on another one (with older software) I get: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.9' not found. In fact on my system glibc is newer (I got gcc-libs 4.5.1: libstdc++.so.6.0.14) and strings…
peoro
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glibc, glib and gnulib

what are differences in the strength and features in gnulib glib and glibc Thanks!
Tim
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An alternative for the deprecated __malloc_hook functionality of glibc

I am writing a memory profiler for C and for that am intercepting calls to the malloc, realloc and free functions via malloc_hooks. Unfortunately, these are deprecated because of their poor behavior in multi threaded environments. I could not find a…
Andreas Grapentin
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_GNU_SOURCE and __USE_GNU

I want to use CPU_SET, which is a glibc linux-specific macro that should be defined in sched.h The manpage clearly states that _GNU_SOURCE must be defined so that the macro is defined. However, looking at the header, CPU_SET is defined only if…
Foo Bah
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What size should I allow for strerror_r?

The OpenGroup POSIX.1-2001 defines strerror_r, as does The Linux Standard Base Core Specification 3.1. But I can find no reference to the maximum size that could be reasonably expected for an error message. I expected some define somewhere that I…
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