Introduction Since their 4.8 version, the C and C++ compilers of the GNU Co mpiler Collection are equipped with built-in memory and data race errors detectors named Address Sanitizer and Thread Sanitizer. This article intends to quickly walk you through the highlights of these two interesting tools. Spotting common memory access errors ... When instructed to compile a given program, the Address Sanitizer sub-system of GCC emits additional code to instruments the memory accesses performed during the program's execution. Later...
In the first article of this series of two, we ran abidiff to compare the ABIs of the libstdc++.so shared libraries from RHEL 6.5 and RHEL 7. In this article, we are going to analyze the resulting ABI change report that was emitted. Analyzing the results The report starts with a header that summarizes the ABI differences: Functions changes summary: 0 Removed, 10 Changed (1260 filtered out), 112 Added functions Variables changes summary: 0 Removed, 3 Changed (72 filtered out)...
Introduction: The challenges around ABI compatibility Ensuring the forward compatibility of application binary interfaces (ABIs) exposed by native shared libraries has been a kind of black art for quite some time, due to many factors. The scope of the term ABI is quite broad, even when it is restricted to shared software libraries. It encompasses low-level concepts like the binary format, the processor instructions set used in the binary, the calling convention of the operating system on a given processor...
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