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langref: Documented extern "..." use

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The use of `extern "..."` for specifying the library that has the definition was undocumented.
Fixes #13906
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Arnau 2023-05-02 13:15:29 +02:00 • committed by Veikka Tuominen
parent b643c5dc91
commit 14c68e847a
1 changed files with 2 additions and 1 deletions
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doc/langref.html.in
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@ -5184,7 +5184,8 @@ export fn sub(a: i8, b: i8) i8 { return a - b; }
// The extern specifier is used to declare a function that will be resolved
// at link time, when linking statically, or at runtime, when linking
// dynamically.
// dynamically. The quoted identifier after the extern keyword specifies
// the library that has the function. (e.g. "c" -> libc.so)
// The callconv specifier changes the calling convention of the function.
const WINAPI: std.builtin.CallingConvention = if (native_arch == .x86) .Stdcall else .C;
extern "kernel32" fn ExitProcess(exit_code: u32) callconv(WINAPI) noreturn;