I think the problem is that Asan and Msan both want to control the heap, and both want to reserve a large amount of memory to use as “shadow memory” which tracks the allocations and usage of the memory your program uses. They can’t both be active because they would be trying to track the … Read more
Compiling with -pg instruments your code, so that Gprof reports detailed information. See gprof’s manual, 9.1 Implementation of Profiling: Profiling works by changing how every function in your program is compiled so that when it is called, it will stash away some information about where it was called from. From this, the profiler can figure … Read more
An update for recent GCC / Xeon. Sandy-Bridge-based Xeon (E3-12xx series, E5-14xx/24xx series, E5-16xx/26xx/46xx series). -march=corei7-avx for GCC < 4.9.0 or -march=sandybridge for GCC >= 4.9.0. This enables the Advanced Vector Extensions support as well as the AES and PCLMUL instruction sets for Sandy Bridge. Here’s the overview from the GCC i386/x86_64 options page: Intel … Read more
Depending on your build system it’s either in your qmake project file(.pro, standard for new projects) or in one of the CMake files (CMakeLists.txt, used by KDE and several other projects). Using .pro: QMAKE_CXXFLAGS += -O2 Using CMake: set( CMAKE_CXX_FLAGS “-g -Wall”)
The NS_BLOCK_ASSERTIONS macro (no “D”) suppresses the checks performed by NSAssert. You supply it to the compiler using -DNS_BLOCK_ASSERTIONS (see the comments for an explanation of the “D”).
Clang (https://clang.llvm.org/) can pretty-print AST of instantiated template: For your example: test.cpp template < class T> T add(T a, T b){ return a+b; } void tmp() { add<int>(10,2); } Command to pretty-print AST: $ clang++ -Xclang -ast-print -fsyntax-only test.cpp Clang-5.0/Clang 14.0 output: template <class T> T add(T a, T b) { return a + b; … Read more
@Target([AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY]) annotation class JvmDefault Specifies that a JVM default method should be generated for non-abstract Kotlin interface member. Usages of this annotation require an explicit compilation argument to be specified: either -Xjvm-default=enable or -Xjvm-default=compatibility. with -Xjvm-default=enable, only default method in interface is generated for each @JvmDefault method. In this mode, annotating an existing method … Read more
The most straightforward solution should be using add_compile_options() if you are using version 2.8.12 or newer. For older versions you can “abuse” add_definitions(). While it is only meant for add -D flags, it also works with any other compiler flag. However, I think it is not meant to be used that way and could break … Read more
The accepted answer is still working but outdated since 2013. This answer is based and new functions from CMake v2.8.12, v3.3 and v3.13. Since CMake-2.8.12 (2013) Two new commands to set CMAKE_CXX_FLAGS: target_compile_options() (for one single target) add_compile_options() (for all targets) The documentation of last version has not changed a lot since cmake-2.8.12: target_compile_options() add_compile_options() … Read more
Yes. From documentation v4.1.2 From documentation latest always_inline Generally, functions are not inlined unless optimization is specified. For functions declared inline, this attribute inlines the function even if no optimization level was specified.