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Questions tagged [address-sanitizer]

AddressSanitizer (ASAN) is a fast memory error detector for issues such as out-of-bounds access and more.

AddressSanitizer (ASAN) is a fast memory error detector and consists of compile time instrumentation and a runtime library.

See also:

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address sanitizer won't work with bash on windows

Currently running llvm, clang, clang-format, and clang-modernize on Ubuntu Bash on Windows. I would like to use the set of sanitize tools released by google including address, memory, and thread sanitize. None of the fsanitize options seem to…
Cole Berhorst
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Visual Studio 22 - Asan - Failed to use and restart external symbolizer

I am trying to setup Asan Address Sanitizer for Visual Studio 2022. I am following this guide from MS: https://learn.microsoft.com/en-us/cpp/sanitizers/asan?view=msvc-170#ide-msbuild I was able to (mostly, I think) follow the instructions. But I…
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What is the difference between leak and address?

I am use -fsanitize=leak and -fsanitize=address in my project. I thought that leak finds memory leaks(doesn't delete memory) and address finds wring memory access. But address also says about not-deleted memory. So, for what purposes -fsanitize=leak…
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sanitizer-leak is NOT detected when golang using cgo to call c library

Summary Previously I used clang-3.8.1 and sanitizer is crashed when using AddressSanitizer. And leakSanitizer doesn't work at all. Then I try to use clang-llvm-10.0, AddressSanitizer could detect the address issue and work normally. But leak issue…
Shawn ZHANG
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ERROR: AddressSanitizer failed to allocate

I have written a program for a research calculation and this program crashed after a long time at a around a certain location. Unfortunately, the program is too big to create a MWE out of it. But, I realized when crashing, no core file is created…
darwin
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How do I make LeakSanitizer ignore end of program leaks

I want to use LeakSanitizer to detect leaked memory, but the style of the program I am using does not free memory before exit. This is fairly common in my experience. I want to detect this leak: int main(int argc, char const *argv[]) { char *p…
Evan Benn
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what are the valid sanitizer suppression strings for gcc?

When using sanitizers with gcc one can provide a list of exceptions/suppressions to deal with false positives and such. the suppression file format is poorly documented. Each suppression is of the form name_of_check:path_or_name What are the valid…
GranBurguesa
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Can I load a C++ shared library built with address sanitizer from Rust?

In tree-sitter, grammars are compiled from C and C++ to shared libraries. These libraries are then dynamically loaded by the tree-sitter CLI, which is a rust program. The tree-sitter CLI is usually responsible for compiling the grammar, although it…
ahelwer
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MSVC Address Sanitizer - Any reason to use it in Release builds?

Microsoft recently brought Address Sanitizer (ASan) to Microsoft Visual Studio 2019, and I've been experimenting with it. This question is specific to C and C++. My question is this: Is there any reason to have ASan enabled for Release builds, as…
Ryan Ries
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Cannot use fsanitize=address in minGW compiler

My C++ Setup INFO : OS - Windows 10, IDE - VS Code, compiler - MinGw ISSUE : I recently found sanitizers for C++ to catch some runtime errors like out of bound array access with -fsanitize=address and -fsanitize=undefined in my VS Code…
humbleCodes
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How to set ASAN_OPTIONS environment variable in CMake?

As far as I understand, to use ASAN_OPTIONS with clang, the ASAN_OPTIONS environment variable must be set before compiling. How can I do this within a CMake script without adding a wrapper script? I need to disable ODR Violation checking for one…
Ashley Duncan
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Address Sanitizer failed to allocate bytes

Getting this error when trying to build iOS app with Address Sanitizers enabled ==3850==ERROR: AddressSanitizer failed to allocate 0xffffffffff9fc000 (-6307840) bytes at address 2db624000 (errno: 22) ==3850==ReserveShadowMemoryRange failed while…
arihant jain
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What does AddressSanitizer: SEGV on unknown address 0x000000000000 mean?

I'm solving a leetcode question and getting this error. I have no idea what this mean as I'm relatively new to C++. It appears to disappear when I remove the else inside the else…
Ved Bharad
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ASAN detects ODR violation of vtable of class which is shared with dynamically loaded library

I'm working on a project which has a "util" library containing stuff like logging, assertion handling etc. This is compiled into a static library with -fPIC added. I also have a plugin system, where the plugins are shared libraries loaded at runtime…
Flamefire
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/usr/bin/ld: cannot find /usr/lib64/libasan.so.0.0.0 on redhat

I am normally using valgrind for my c/c++ programs but people have been recommending address sanitizer, so I wanted to test it out, but im having problems linking against it on a redhat system. I got the following code: $ cat heap-use-after-free.cpp…
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