Merge remote-tracking branch 'upstream/master' into stable

Author: MartinNowak

.gitignore

@@ -11,3 +11,4 @@ trace.log
 /errno_c*.obj
 /msvc*.obj
 make
+*.lst

CODEOWNERS

@@ -27,7 +27,7 @@ src/core/runtime.d @MartinNowak @Abscissa
 src/core/simd.d @WalterBright @MartinNowak
 src/core/stdc/* @schveiguy @ibuclaw
 src/core/stdcpp/* @WalterBright @Darredevil @TurkeyMan
-src/core/sync/* @MartinNowak @Geod24 @WalterBright @ZombineDev
+src/core/sync/* @MartinNowak @Geod24 @WalterBright @PetarKirov
 src/core/sys/bionic/* @joakim-noah
 src/core/sys/darwin/* @jacob-carlborg @klickverbot @etcimon @MartinNowak
 src/core/sys/freebsd/* @redstar @MartinNowak @Calrama @jmdavis
@@ -38,11 +38,11 @@ src/core/sys/openbsd/* @redstar
 src/core/sys/posix/* @CyberShadow @MartinNowak @joakim-noah @redstar
 src/core/sys/solaris/* @redstar
 src/core/sys/windows/* @CyberShadow
-src/core/thread.d @MartinNowak @Burgos @jpf91 @ZombineDev
+src/core/thread.d @MartinNowak @Burgos @jpf91 @PetarKirov
 src/core/time.d @jmdavis @schveiguy @CyberShadow
 
 src/etc* @deadalnix @MartinNowak
-src/gc* @rainers @DmitryOlshansky @MartinNowak @leandro-lucarella-sociomantic
+src/core/internal/gc/* @rainers @DmitryOlshansky @MartinNowak @llucax
 
 src/object.d @andralex @MartinNowak
 

changelog/callStructDtorsDuringGC.dd

@@ -0,0 +1,3 @@
+The druntime option `callStructDtorsDuringGC` has been removed
+
+It had been deprecated in 2.088.

changelog/freebsd-statvfs.dd

@@ -0,0 +1,3 @@
+FreeBSD declarations from statvfs that belong in mount have been removed
+
+It had been deprecated in 2.082 in favor of `core.sys.freebsd.sys.mount`.

changelog/libunwind.dd

@@ -0,0 +1,20 @@
+Experimental llvm-libunwind based backtrace printing was added
+
+Currently, druntime uses the `backtrace` and `backtrace_symbols` functions
+to provide debug informations (addresses and function names, respectively).
+
+This can create issues for target that do not provide `backtrace`, such as Musl libc.
+Additionally, the `backtrace` interface is inherently limited, as it only allow
+to get up to `X` frames (where `X` is the size of the buffer), and forces them
+to be stored continuously in memory. The same apply to `backtrace_symbols`.
+
+On the other hand, libunwind is an industry standard for unwinding and stack trace inspection.
+It has been ported to a variety of platform, has a simple yet flexible API,
+and is part of GCC, and a similar library is part of LLVM.
+
+Starting from this release, druntime includes a way to use LLVM's libunwind as a backtrace provider.
+The support is limited to LLVM's version of libunwind, as it is available on Alpine Linux,
+and easier to interface with.
+
+For packagers, one can define `DRuntime_Use_Libunwind` when building druntime,
+enabling the support by default.

mak/COPY

@@ -53,17 +53,29 @@ COPY=\
 	\
 	$(IMPDIR)\core\internal\backtrace\dwarf.d \
 	$(IMPDIR)\core\internal\backtrace\elf.d \
+	$(IMPDIR)\core\internal\backtrace\handler.d \
+	$(IMPDIR)\core\internal\backtrace\libunwind.d \
 	$(IMPDIR)\core\internal\backtrace\macho.d \
+	$(IMPDIR)\core\internal\backtrace\unwind.d \
 	\
 	$(IMPDIR)\core\internal\elf\dl.d \
 	$(IMPDIR)\core\internal\elf\io.d \
 	\
+	$(IMPDIR)\core\internal\gc\bits.d \
+	$(IMPDIR)\core\internal\gc\os.d \
+	$(IMPDIR)\core\internal\gc\pooltable.d \
+	$(IMPDIR)\core\internal\gc\proxy.d \
+	$(IMPDIR)\core\internal\gc\impl\conservative\gc.d \
+	$(IMPDIR)\core\internal\gc\impl\manual\gc.d \
+	$(IMPDIR)\core\internal\gc\impl\proto\gc.d \
+	\
 	$(IMPDIR)\core\internal\container\array.d \
 	$(IMPDIR)\core\internal\container\common.d \
 	$(IMPDIR)\core\internal\container\hashtab.d \
 	$(IMPDIR)\core\internal\container\treap.d \
 	\
 	$(IMPDIR)\core\internal\util\array.d \
+	$(IMPDIR)\core\internal\util\math.d \
 	\
 	$(IMPDIR)\core\internal\vararg\aarch64.d \
 	$(IMPDIR)\core\internal\vararg\sysv_x64.d \
@@ -107,15 +119,18 @@ COPY=\
 	\
 	$(IMPDIR)\core\sys\bionic\err.d \
 	$(IMPDIR)\core\sys\bionic\fcntl.d \
+	$(IMPDIR)\core\sys\bionic\stdlib.d \
 	$(IMPDIR)\core\sys\bionic\string.d \
 	$(IMPDIR)\core\sys\bionic\unistd.d \
 	\
 	$(IMPDIR)\core\sys\darwin\crt_externs.d \
 	$(IMPDIR)\core\sys\darwin\dlfcn.d \
 	$(IMPDIR)\core\sys\darwin\err.d \
 	$(IMPDIR)\core\sys\darwin\execinfo.d \
+	$(IMPDIR)\core\sys\darwin\fcntl.d \
 	$(IMPDIR)\core\sys\darwin\ifaddrs.d \
 	$(IMPDIR)\core\sys\darwin\pthread.d \
+	$(IMPDIR)\core\sys\darwin\stdlib.d \
 	$(IMPDIR)\core\sys\darwin\string.d \
 	\
 	$(IMPDIR)\core\sys\darwin\mach\dyld.d \
@@ -133,6 +148,7 @@ COPY=\
 	$(IMPDIR)\core\sys\darwin\sys\cdefs.d \
 	$(IMPDIR)\core\sys\darwin\sys\event.d \
 	$(IMPDIR)\core\sys\darwin\sys\mman.d \
+	$(IMPDIR)\core\sys\darwin\sys\sysctl.d \
 	\
 	$(IMPDIR)\core\sys\freebsd\config.d \
 	$(IMPDIR)\core\sys\freebsd\dlfcn.d \
@@ -142,6 +158,7 @@ COPY=\
 	$(IMPDIR)\core\sys\freebsd\netinet\in_.d \
 	\
 	$(IMPDIR)\core\sys\freebsd\pthread_np.d \
+	$(IMPDIR)\core\sys\freebsd\stdlib.d \
 	$(IMPDIR)\core\sys\freebsd\string.d \
 	$(IMPDIR)\core\sys\freebsd\time.d \
 	$(IMPDIR)\core\sys\freebsd\unistd.d \
@@ -157,6 +174,7 @@ COPY=\
 	$(IMPDIR)\core\sys\freebsd\sys\link_elf.d \
 	$(IMPDIR)\core\sys\freebsd\sys\mman.d \
 	$(IMPDIR)\core\sys\freebsd\sys\mount.d \
+	$(IMPDIR)\core\sys\freebsd\sys\sysctl.d \
 	\
 	$(IMPDIR)\core\sys\dragonflybsd\dlfcn.d \
 	$(IMPDIR)\core\sys\dragonflybsd\err.d \
@@ -165,6 +183,7 @@ COPY=\
 	$(IMPDIR)\core\sys\dragonflybsd\netinet\in_.d \
 	\
 	$(IMPDIR)\core\sys\dragonflybsd\pthread_np.d \
+	$(IMPDIR)\core\sys\dragonflybsd\stdlib.d \
 	$(IMPDIR)\core\sys\dragonflybsd\string.d \
 	$(IMPDIR)\core\sys\dragonflybsd\time.d \
 	\
@@ -179,6 +198,7 @@ COPY=\
 	$(IMPDIR)\core\sys\dragonflybsd\sys\link_elf.d \
 	$(IMPDIR)\core\sys\dragonflybsd\sys\mman.d \
 	$(IMPDIR)\core\sys\dragonflybsd\sys\socket.d \
+	$(IMPDIR)\core\sys\dragonflybsd\sys\sysctl.d \
 	\
 	$(IMPDIR)\core\sys\linux\config.d \
 	$(IMPDIR)\core\sys\linux\dlfcn.d \
@@ -217,6 +237,7 @@ COPY=\
 	$(IMPDIR)\core\sys\netbsd\dlfcn.d \
 	$(IMPDIR)\core\sys\netbsd\err.d \
 	$(IMPDIR)\core\sys\netbsd\execinfo.d \
+	$(IMPDIR)\core\sys\netbsd\stdlib.d \
 	$(IMPDIR)\core\sys\netbsd\string.d \
 	$(IMPDIR)\core\sys\netbsd\time.d \
 	\
@@ -228,9 +249,11 @@ COPY=\
 	$(IMPDIR)\core\sys\netbsd\sys\featuretest.d \
 	$(IMPDIR)\core\sys\netbsd\sys\link_elf.d \
 	$(IMPDIR)\core\sys\netbsd\sys\mman.d \
+	$(IMPDIR)\core\sys\netbsd\sys\sysctl.d \
 	\
 	$(IMPDIR)\core\sys\openbsd\dlfcn.d \
 	$(IMPDIR)\core\sys\openbsd\err.d \
+	$(IMPDIR)\core\sys\openbsd\stdlib.d \
 	$(IMPDIR)\core\sys\openbsd\string.d \
 	$(IMPDIR)\core\sys\openbsd\time.d \
 	\
@@ -241,6 +264,7 @@ COPY=\
 	$(IMPDIR)\core\sys\openbsd\sys\elf_common.d \
 	$(IMPDIR)\core\sys\openbsd\sys\link_elf.d \
 	$(IMPDIR)\core\sys\openbsd\sys\mman.d \
+	$(IMPDIR)\core\sys\openbsd\sys\sysctl.d \
 	\
 	$(IMPDIR)\core\sys\posix\arpa\inet.d \
 	$(IMPDIR)\core\sys\posix\aio.d \
@@ -307,6 +331,7 @@ COPY=\
 	$(IMPDIR)\core\sys\solaris\execinfo.d \
 	$(IMPDIR)\core\sys\solaris\libelf.d \
 	$(IMPDIR)\core\sys\solaris\link.d \
+	$(IMPDIR)\core\sys\solaris\stdlib.d \
 	$(IMPDIR)\core\sys\solaris\time.d \
 	\
 	$(IMPDIR)\core\sys\solaris\sys\elf.d \