2011年2月27日 · sudo apt install valgrind # Ubuntu, Debian, etc. sudo yum install valgrind # RHEL, CentOS, Fedora, etc. sudo pacman -Syu valgrind # Arch, Manjaro, Garuda, etc. sudo pkg ins valgrind # FreeBSD Valgrind is readily usable for C, C++, Rust and Ada code, but can even be used for other languages when configured properly (see this for Python).

2009年11月1日 · Valgrind provides wrappers around the system call and registers for pre and post callbacks for every system call to track the memory accessed as part of the system call. Thus, Valgrind is a OS abstraction layer between the operating system and the client application. The diagram illustrates the 8 phases of Valgrind :

2021年2月23日 · Can anyone tell the main features, differences and pros/cons of Sanitizer and Valgrind? Edit: I found some of comparisons like: Valgrind uses DBI(dynamic binary instrumentation) and Sanitizer uses CTI(compile-time instrumentation). Valgrind makes the program much slower(20x) whether Sanitizer runs much faster than Valgrind(2x).

2013年2月8日 · Since valgrind malloc is injected directly into the program text -- not loaded as a dynamic library -- it appears in the stack the same way as your own code does. This allows Valgrind to track the allocations, but also makes it harder to do exactly what you have asked. FYI: I am using valgrind 3.5.

Valgrind uses this stricter definition of the term "memory leak". This is the type of leak which can potentially cause significant heap depletion, especially for long lived processes. The "still reachable" category within Valgrind's leak report refers to allocations that fit only the first definition of "memory leak".

2012年7月10日 · The false positives may arise if you are using older valgrind with newer gcc and glibc, i.e., valgrind 3.3 with glibc 2.9. Having said that, you still have to look into issue and find out if it is really a false positive (if that turns out to be the case, you can write a suppression for it yourself) or is it a real bug in your program.

Without --trace-children=yes set, valgrind will stop tracing at the exec and you won't get any useful output from valgrind on your_program. One potential downside to this approach is that valgrind might report any memory issues in env. I haven't seen any false positives from this source (env is not a very complicated program), but it could happen.

2012年10月30日 · That means that when valgrind comes to check for leaks all the symbol information for the library is gone as the library is no longer loaded. If you can rebuild the executable then the easiest solution may be to temporarily stop it calling dlclose so that the library stays loaded until the end.

2011年12月2日 · If you want to save valgrind's output to the logfile without a.out's, you should use the --log-file option suggested by Lex. – edam Commented Oct 1, 2013 at 13:34

2018年2月7日 · I am trying to run Valgrind on armv7 architecture, and after compiling Valgrind and getting it onto the target I am able to run Valgrind successfully on 'ls -l' but when I run Valgrind on my executable it starts and then always fails after printing out this error: > > ==2333== Unsupported clone() flags: 0x800600 > ==2333== > ==2333== The only ...