How much effort are you willing to go to? There’s an obnoxiously obscure way to do it but it requires you to set up a dummy directory to hold surrogates for the system headers. OTOH, it doesn’t require any changes in any of your source code. The same technique works equally well for C code. … Read more
Try this: auto ptr = std::make_shared<Func>(std::initializer_list<std::string>{“foo”, “bar”, “baz”}); Clang is not willing to deduce the type of {“foo”, “bar”, “baz”}. I’m currently not sure whether that is the way the language is supposed to work, or if we’re looking at a compiler bug.
try passing the –host option to configure which will cause all the cc ar etc utilities to prefix with armv7l-unknown-linux-gnueabihf- eg: ./configure –host=armv7l-unknown-linux-gnueabihf –build=i686-unknown-linux-gnu Since you are using configure with hopefully autotools take a look at: automake Cross compiling
The entire point of the matter is ADL kicking in: N3797 – [basic.lookup.argdep] When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqualified lookup (3.4.1) may be searched, and in those namespaces, namespace-scope friend function or function template declarations (11.3) not otherwise visible may be found. … Read more
I’m reasonably sure that there isn’t any way to do this. Both GCC and Clang do have internal interfaces which allow the language frontend to register #pragma handlers with the preprocessor – see GCC’s libcpp/directives.c and Clang’s lib/Lex/Pragma.cpp – but, as far as I can see, there is nothing which lets you modify which handlers … Read more
From this godbolt session clang is able to perform all the pow calculations at compile time. It knows at compile time what the values of k and n are and it just constant folds the calculation: .LCPI0_0: .quad 4604480259023595110 # double 0.69999999999999996 .LCPI0_1: .quad 4602498675187552091 # double 0.48999999999999994 .LCPI0_2: .quad 4599850558606658239 # double 0.34299999999999992 .LCPI0_3: … Read more
You can build your project with -fsanitize=address -fsanitize-recover=address flags, and run with environment variable ASAN_OPTIONS=halt_on_error=0. Source: https://github.com/google/sanitizers/wiki/AddressSanitizer
Yes, this is valid, there was defect report 1688: Volatile constexpr variables that was filed for this, saying: There does not appear to be language in the current wording stating that constexpr cannot be applied to a variable of volatile-qualified type. Also, the wording in 5.19 [expr.const] paragraph 2 referring to “a non-volatile object defined … Read more
clang -dM -E – < /dev/null will list all the preprocessor definitions for clang.