Bug 16536 – DMD master does not build on OS X 10.11.6/Xcode 7.3.1

--- $ cd dmd $ git show commit d8be50edd4106ca498ed09a9b3a445240de5cf47 […] $ make -f posix.mak […] Undefined symbols for architecture x86_64: "symboldata(unsigned long long, unsigned int)", referenced from: el_ptr(Symbol*) in backend.a(el.o) el_convstring(elem*) in backend.a(el.o) out_readonly_sym(unsigned int, void*, int) in backend.a(out.o) Obj::sym_cdata(unsigned int, char*, int) in backend.a(machobj.o) "_align(unsigned long long, unsigned long long)", referenced from: codgen() in backend.a(cgcod.o) stackoffsets(int) in backend.a(cgcod.o) outjmptab(block*) in backend.a(cod3.o) outswitab(block*) in backend.a(cod3.o) type_paramsize(TYPE*) in backend.a(type.o) alignOffset(int, unsigned long long) in backend.a(out.o) cdfunc(elem*, unsigned int*) in backend.a(cod1.o) ... --- This is on linking the DMD executable. Xcode 7.3.1: --- $ clang --version Apple LLVM version 7.3.0 (clang-703.0.31) Target: x86_64-apple-darwin15.6.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin --- Host DMD from Homebrew: --- $ dmd --version DMD64 D Compiler v2.071.1 --- This seems to be fallout from translating msc.c to D.

Note the following from cdef.h: #if defined(__UINT64_TYPE__) typedef __INT64_TYPE__ targ_llong; typedef __UINT64_TYPE__ targ_ullong; #elif defined(__UINTMAX_TYPE__) typedef __INTMAX_TYPE__ targ_llong; typedef __UINTMAX_TYPE__ targ_ullong; #else typedef long long targ_llong; typedef unsigned long long targ_ullong; #endif Which of these is the C++ compiler on your machine doing? Is there another macro it should be doing? Getting this right is necessary for the name mangling to match what D generates for 'long' and 'ulong'. The way to determine the pertinent macro is to have your C++ compiler dump all its predefined macros, once for -m32 and once for -m64. Diff the two, and find the relevant macro.

I'm using the stock Apple Clang shipped with Xcode 7.3.1. Is this the unsigned long vs. unsigned long long mangling problem coming back to haunt us again? --- $ clang -dM -E test.cpp #define OBJC_NEW_PROPERTIES 1 #define _LP64 1 #define __APPLE_CC__ 6000 #define __APPLE__ 1 #define __ATOMIC_ACQUIRE 2 #define __ATOMIC_ACQ_REL 4 #define __ATOMIC_CONSUME 1 #define __ATOMIC_RELAXED 0 #define __ATOMIC_RELEASE 3 #define __ATOMIC_SEQ_CST 5 #define __BIGGEST_ALIGNMENT__ 16 #define __BLOCKS__ 1 #define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__ #define __CHAR16_TYPE__ unsigned short #define __CHAR32_TYPE__ unsigned int #define __CHAR_BIT__ 8 #define __CONSTANT_CFSTRINGS__ 1 #define __DBL_DECIMAL_DIG__ 17 #define __DBL_DENORM_MIN__ 4.9406564584124654e-324 #define __DBL_DIG__ 15 #define __DBL_EPSILON__ 2.2204460492503131e-16 #define __DBL_HAS_DENORM__ 1 #define __DBL_HAS_INFINITY__ 1 #define __DBL_HAS_QUIET_NAN__ 1 #define __DBL_MANT_DIG__ 53 #define __DBL_MAX_10_EXP__ 308 #define __DBL_MAX_EXP__ 1024 #define __DBL_MAX__ 1.7976931348623157e+308 #define __DBL_MIN_10_EXP__ (-307) #define __DBL_MIN_EXP__ (-1021) #define __DBL_MIN__ 2.2250738585072014e-308 #define __DECIMAL_DIG__ __LDBL_DECIMAL_DIG__ #define __DEPRECATED 1 #define __DYNAMIC__ 1 #define __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 101100 #define __EXCEPTIONS 1 #define __FINITE_MATH_ONLY__ 0 #define __FLT_DECIMAL_DIG__ 9 #define __FLT_DENORM_MIN__ 1.40129846e-45F #define __FLT_DIG__ 6 #define __FLT_EPSILON__ 1.19209290e-7F #define __FLT_EVAL_METHOD__ 0 #define __FLT_HAS_DENORM__ 1 #define __FLT_HAS_INFINITY__ 1 #define __FLT_HAS_QUIET_NAN__ 1 #define __FLT_MANT_DIG__ 24 #define __FLT_MAX_10_EXP__ 38 #define __FLT_MAX_EXP__ 128 #define __FLT_MAX__ 3.40282347e+38F #define __FLT_MIN_10_EXP__ (-37) #define __FLT_MIN_EXP__ (-125) #define __FLT_MIN__ 1.17549435e-38F #define __FLT_RADIX__ 2 #define __FXSR__ 1 #define __GCC_ATOMIC_BOOL_LOCK_FREE 2 #define __GCC_ATOMIC_CHAR16_T_LOCK_FREE 2 #define __GCC_ATOMIC_CHAR32_T_LOCK_FREE 2 #define __GCC_ATOMIC_CHAR_LOCK_FREE 2 #define __GCC_ATOMIC_INT_LOCK_FREE 2 #define __GCC_ATOMIC_LLONG_LOCK_FREE 2 #define __GCC_ATOMIC_LONG_LOCK_FREE 2 #define __GCC_ATOMIC_POINTER_LOCK_FREE 2 #define __GCC_ATOMIC_SHORT_LOCK_FREE 2 #define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1 #define __GCC_ATOMIC_WCHAR_T_LOCK_FREE 2 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 1 #define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 1 #define __GNUC_GNU_INLINE__ 1 #define __GNUC_MINOR__ 2 #define __GNUC_PATCHLEVEL__ 1 #define __GNUC__ 4 #define __GNUG__ 4 #define __GXX_ABI_VERSION 1002 #define __GXX_RTTI 1 #define __GXX_WEAK__ 1 #define __INT16_C_SUFFIX__ #define __INT16_FMTd__ "hd" #define __INT16_FMTi__ "hi" #define __INT16_MAX__ 32767 #define __INT16_TYPE__ short #define __INT32_C_SUFFIX__ #define __INT32_FMTd__ "d" #define __INT32_FMTi__ "i" #define __INT32_MAX__ 2147483647 #define __INT32_TYPE__ int #define __INT64_C_SUFFIX__ LL #define __INT64_FMTd__ "lld" #define __INT64_FMTi__ "lli" #define __INT64_MAX__ 9223372036854775807LL #define __INT64_TYPE__ long long int #define __INT8_C_SUFFIX__ #define __INT8_FMTd__ "hhd" #define __INT8_FMTi__ "hhi" #define __INT8_MAX__ 127 #define __INT8_TYPE__ signed char #define __INTMAX_C_SUFFIX__ L #define __INTMAX_FMTd__ "ld" #define __INTMAX_FMTi__ "li" #define __INTMAX_MAX__ 9223372036854775807L #define __INTMAX_TYPE__ long int #define __INTMAX_WIDTH__ 64 #define __INTPTR_FMTd__ "ld" #define __INTPTR_FMTi__ "li" #define __INTPTR_MAX__ 9223372036854775807L #define __INTPTR_TYPE__ long int #define __INTPTR_WIDTH__ 64 #define __INT_FAST16_FMTd__ "hd" #define __INT_FAST16_FMTi__ "hi" #define __INT_FAST16_MAX__ 32767 #define __INT_FAST16_TYPE__ short #define __INT_FAST32_FMTd__ "d" #define __INT_FAST32_FMTi__ "i" #define __INT_FAST32_MAX__ 2147483647 #define __INT_FAST32_TYPE__ int #define __INT_FAST64_FMTd__ "ld" #define __INT_FAST64_FMTi__ "li" #define __INT_FAST64_MAX__ 9223372036854775807L #define __INT_FAST64_TYPE__ long int #define __INT_FAST8_FMTd__ "hhd" #define __INT_FAST8_FMTi__ "hhi" #define __INT_FAST8_MAX__ 127 #define __INT_FAST8_TYPE__ signed char #define __INT_LEAST16_FMTd__ "hd" #define __INT_LEAST16_FMTi__ "hi" #define __INT_LEAST16_MAX__ 32767 #define __INT_LEAST16_TYPE__ short #define __INT_LEAST32_FMTd__ "d" #define __INT_LEAST32_FMTi__ "i" #define __INT_LEAST32_MAX__ 2147483647 #define __INT_LEAST32_TYPE__ int #define __INT_LEAST64_FMTd__ "ld" #define __INT_LEAST64_FMTi__ "li" #define __INT_LEAST64_MAX__ 9223372036854775807L #define __INT_LEAST64_TYPE__ long int #define __INT_LEAST8_FMTd__ "hhd" #define __INT_LEAST8_FMTi__ "hhi" #define __INT_LEAST8_MAX__ 127 #define __INT_LEAST8_TYPE__ signed char #define __INT_MAX__ 2147483647 #define __LDBL_DECIMAL_DIG__ 21 #define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L #define __LDBL_DIG__ 18 #define __LDBL_EPSILON__ 1.08420217248550443401e-19L #define __LDBL_HAS_DENORM__ 1 #define __LDBL_HAS_INFINITY__ 1 #define __LDBL_HAS_QUIET_NAN__ 1 #define __LDBL_MANT_DIG__ 64 #define __LDBL_MAX_10_EXP__ 4932 #define __LDBL_MAX_EXP__ 16384 #define __LDBL_MAX__ 1.18973149535723176502e+4932L #define __LDBL_MIN_10_EXP__ (-4931) #define __LDBL_MIN_EXP__ (-16381) #define __LDBL_MIN__ 3.36210314311209350626e-4932L #define __LITTLE_ENDIAN__ 1 #define __LONG_LONG_MAX__ 9223372036854775807LL #define __LONG_MAX__ 9223372036854775807L #define __LP64__ 1 #define __MACH__ 1 #define __MMX__ 1 #define __NO_INLINE__ 1 #define __NO_MATH_INLINES 1 #define __ORDER_BIG_ENDIAN__ 4321 #define __ORDER_LITTLE_ENDIAN__ 1234 #define __ORDER_PDP_ENDIAN__ 3412 #define __PIC__ 2 #define __POINTER_WIDTH__ 64 #define __PRAGMA_REDEFINE_EXTNAME 1 #define __PTRDIFF_FMTd__ "ld" #define __PTRDIFF_FMTi__ "li" #define __PTRDIFF_MAX__ 9223372036854775807L #define __PTRDIFF_TYPE__ long int #define __PTRDIFF_WIDTH__ 64 #define __REGISTER_PREFIX__ #define __SCHAR_MAX__ 127 #define __SHRT_MAX__ 32767 #define __SIG_ATOMIC_MAX__ 2147483647 #define __SIG_ATOMIC_WIDTH__ 32 #define __SIZEOF_DOUBLE__ 8 #define __SIZEOF_FLOAT__ 4 #define __SIZEOF_INT128__ 16 #define __SIZEOF_INT__ 4 #define __SIZEOF_LONG_DOUBLE__ 16 #define __SIZEOF_LONG_LONG__ 8 #define __SIZEOF_LONG__ 8 #define __SIZEOF_POINTER__ 8 #define __SIZEOF_PTRDIFF_T__ 8 #define __SIZEOF_SHORT__ 2 #define __SIZEOF_SIZE_T__ 8 #define __SIZEOF_WCHAR_T__ 4 #define __SIZEOF_WINT_T__ 4 #define __SIZE_FMTX__ "lX" #define __SIZE_FMTo__ "lo" #define __SIZE_FMTu__ "lu" #define __SIZE_FMTx__ "lx" #define __SIZE_MAX__ 18446744073709551615UL #define __SIZE_TYPE__ long unsigned int #define __SIZE_WIDTH__ 64 #define __SSE2_MATH__ 1 #define __SSE2__ 1 #define __SSE3__ 1 #define __SSE_MATH__ 1 #define __SSE__ 1 #define __SSP__ 1 #define __SSSE3__ 1 #define __STDC_HOSTED__ 1 #define __STDC_UTF_16__ 1 #define __STDC_UTF_32__ 1 #define __STDC__ 1 #define __UINT16_C_SUFFIX__ #define __UINT16_FMTX__ "hX" #define __UINT16_FMTo__ "ho" #define __UINT16_FMTu__ "hu" #define __UINT16_FMTx__ "hx" #define __UINT16_MAX__ 65535 #define __UINT16_TYPE__ unsigned short #define __UINT32_C_SUFFIX__ U #define __UINT32_FMTX__ "X" #define __UINT32_FMTo__ "o" #define __UINT32_FMTu__ "u" #define __UINT32_FMTx__ "x" #define __UINT32_MAX__ 4294967295U #define __UINT32_TYPE__ unsigned int #define __UINT64_C_SUFFIX__ ULL #define __UINT64_FMTX__ "llX" #define __UINT64_FMTo__ "llo" #define __UINT64_FMTu__ "llu" #define __UINT64_FMTx__ "llx" #define __UINT64_MAX__ 18446744073709551615ULL #define __UINT64_TYPE__ long long unsigned int #define __UINT8_C_SUFFIX__ #define __UINT8_FMTX__ "hhX" #define __UINT8_FMTo__ "hho" #define __UINT8_FMTu__ "hhu" #define __UINT8_FMTx__ "hhx" #define __UINT8_MAX__ 255 #define __UINT8_TYPE__ unsigned char #define __UINTMAX_C_SUFFIX__ UL #define __UINTMAX_FMTX__ "lX" #define __UINTMAX_FMTo__ "lo" #define __UINTMAX_FMTu__ "lu" #define __UINTMAX_FMTx__ "lx" #define __UINTMAX_MAX__ 18446744073709551615UL #define __UINTMAX_TYPE__ long unsigned int #define __UINTMAX_WIDTH__ 64 #define __UINTPTR_FMTX__ "lX" #define __UINTPTR_FMTo__ "lo" #define __UINTPTR_FMTu__ "lu" #define __UINTPTR_FMTx__ "lx" #define __UINTPTR_MAX__ 18446744073709551615UL #define __UINTPTR_TYPE__ long unsigned int #define __UINTPTR_WIDTH__ 64 #define __UINT_FAST16_FMTX__ "hX" #define __UINT_FAST16_FMTo__ "ho" #define __UINT_FAST16_FMTu__ "hu" #define __UINT_FAST16_FMTx__ "hx" #define __UINT_FAST16_MAX__ 65535 #define __UINT_FAST16_TYPE__ unsigned short #define __UINT_FAST32_FMTX__ "X" #define __UINT_FAST32_FMTo__ "o" #define __UINT_FAST32_FMTu__ "u" #define __UINT_FAST32_FMTx__ "x" #define __UINT_FAST32_MAX__ 4294967295U #define __UINT_FAST32_TYPE__ unsigned int #define __UINT_FAST64_FMTX__ "lX" #define __UINT_FAST64_FMTo__ "lo" #define __UINT_FAST64_FMTu__ "lu" #define __UINT_FAST64_FMTx__ "lx" #define __UINT_FAST64_MAX__ 18446744073709551615UL #define __UINT_FAST64_TYPE__ long unsigned int #define __UINT_FAST8_FMTX__ "hhX" #define __UINT_FAST8_FMTo__ "hho" #define __UINT_FAST8_FMTu__ "hhu" #define __UINT_FAST8_FMTx__ "hhx" #define __UINT_FAST8_MAX__ 255 #define __UINT_FAST8_TYPE__ unsigned char #define __UINT_LEAST16_FMTX__ "hX" #define __UINT_LEAST16_FMTo__ "ho" #define __UINT_LEAST16_FMTu__ "hu" #define __UINT_LEAST16_FMTx__ "hx" #define __UINT_LEAST16_MAX__ 65535 #define __UINT_LEAST16_TYPE__ unsigned short #define __UINT_LEAST32_FMTX__ "X" #define __UINT_LEAST32_FMTo__ "o" #define __UINT_LEAST32_FMTu__ "u" #define __UINT_LEAST32_FMTx__ "x" #define __UINT_LEAST32_MAX__ 4294967295U #define __UINT_LEAST32_TYPE__ unsigned int #define __UINT_LEAST64_FMTX__ "lX" #define __UINT_LEAST64_FMTo__ "lo" #define __UINT_LEAST64_FMTu__ "lu" #define __UINT_LEAST64_FMTx__ "lx" #define __UINT_LEAST64_MAX__ 18446744073709551615UL #define __UINT_LEAST64_TYPE__ long unsigned int #define __UINT_LEAST8_FMTX__ "hhX" #define __UINT_LEAST8_FMTo__ "hho" #define __UINT_LEAST8_FMTu__ "hhu" #define __UINT_LEAST8_FMTx__ "hhx" #define __UINT_LEAST8_MAX__ 255 #define __UINT_LEAST8_TYPE__ unsigned char #define __USER_LABEL_PREFIX__ _ #define __VERSION__ "4.2.1 Compatible Apple LLVM 7.3.0 (clang-703.0.31)" #define __WCHAR_MAX__ 2147483647 #define __WCHAR_TYPE__ int #define __WCHAR_WIDTH__ 32 #define __WINT_TYPE__ int #define __WINT_WIDTH__ 32 #define __amd64 1 #define __amd64__ 1 #define __apple_build_version__ 7030031 #define __block __attribute__((__blocks__(byref))) #define __clang__ 1 #define __clang_major__ 7 #define __clang_minor__ 3 #define __clang_patchlevel__ 0 #define __clang_version__ "7.3.0 (clang-703.0.31)" #define __core2 1 #define __core2__ 1 #define __cplusplus 199711L #define __cpp_exceptions 199711 #define __cpp_rtti 199711 #define __llvm__ 1 #define __nonnull _Nonnull #define __null_unspecified _Null_unspecified #define __nullable _Nullable #define __pic__ 2 #define __private_extern__ extern #define __strong #define __tune_core2__ 1 #define __unsafe_unretained #define __weak __attribute__((objc_gc(weak))) #define __x86_64 1 #define __x86_64__ 1 ---

Same problem with Xcode/Clang 8. I looks like "size_t" is defined as "__SIZE_TYPE__" which is defined as "long unsigned int". Replacing defining "targ_ullong" as "size_t" fixes the problem for 64bit, but not for 32bit.

Should it be using d_size_t instead of targ_ullong?

This is preventing testing 2.072.0-b1 on os x.

I manually patch the compiler by replacing targ_size_t with size_t/d_size_t where the linker complains. I could create a PR but I don't know if it's the correct solution.

Well, from the error message, it seems to me we're using `unsigned long long` on the C side (typedef unsigned long long targ_ullong), but `unsigned long` on the D side (alias targ_ullong = ulong). (In reply to Jacob Carlborg from comment #6) > I manually patch the compiler by replacing targ_size_t with size_t/d_size_t > where the linker complains. I could create a PR but I don't know if it's the > correct solution. Well we want to always use unsigned long long on both sides (and for 32 and 64-bit dmds), b/c it must be able to hold any target's size_t (hence the name targ_size_t). It's a slightly different problem than the fix for Issue 16000 https://github.com/dlang/dmd/pull/5788/files#diff-5910c4bad5eadf90caa32a46ab678aa0R12, where we wanted size_t (4/8 bytes depending on 32/64-bit dmd) on both sides. Not too sure, but I guess if you `typedef unsigned long targ_ullong` on OSX/64 it should work, but that stuff starts to become really messy.

*** Issue 16596 has been marked as a duplicate of this issue. ***

Looks like the difference between Xcode 7.3.x and older versions (tried 5.1.1) is the lack of __UINTMAX_TYPE__. Strangely David reports __UINTMAX_TYPE__ to be "long unsigned int" (compatible w/ dmd's ulong). Could someone who can reproduce the problem please run. touch test.c clang -dM -E test.c | grep UINTMAX prints #define __UINTMAX_TYPE__ long unsigned int for me.

(In reply to Martin Nowak from comment #9) > Looks like the difference between Xcode 7.3.x and older versions (tried > 5.1.1) is the lack of __UINTMAX_TYPE__. > Strangely David reports __UINTMAX_TYPE__ to be "long unsigned int" > (compatible w/ dmd's ulong). > > Could someone who can reproduce the problem […] Just for the sake of completeness, I still get the same in both C and C++ mode $ clang -dM -E test.c | grep UINTMAX #define __UINTMAX_C_SUFFIX__ UL #define __UINTMAX_FMTX__ "lX" #define __UINTMAX_FMTo__ "lo" #define __UINTMAX_FMTu__ "lu" #define __UINTMAX_FMTx__ "lx" #define __UINTMAX_MAX__ 18446744073709551615UL #define __UINTMAX_TYPE__ long unsigned int #define __UINTMAX_WIDTH__ 64 $ clang++ -dM -E test.cpp | grep UINTMAX #define __UINTMAX_C_SUFFIX__ UL #define __UINTMAX_FMTX__ "lX" #define __UINTMAX_FMTo__ "lo" #define __UINTMAX_FMTu__ "lu" #define __UINTMAX_FMTx__ "lx" #define __UINTMAX_MAX__ 18446744073709551615UL #define __UINTMAX_TYPE__ long unsigned int #define __UINTMAX_WIDTH__ 64

(In reply to David Nadlinger from comment #10) > Just for the sake of completeness, I still get the same in both C and C++ > mode > I get the same.

I have the same error with Clang 7.0.2 as well. I also have the same output.

Let's please answer the question of comment 1, which typedef is active. Looks like you have a __UINT64_TYPE__ long long unsigned int now.

(In reply to Martin Nowak from comment #13) > Let's please answer the question of comment 1, which typedef is active. > Looks like you have a __UINT64_TYPE__ long long unsigned int now. Indeed the __UINT64_TYPE__ isn't present on my version of XCode/clang. It seems the better fix would be to rely on <stdint.h> and always use uint64_t. That would be unsigned long long, so we'd need to change D's ulong to match that. I'll go with a workaround for newer XCode versions for now, but this needs to be sorted out clearly.

Commits pushed to stable at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/3b34132a9dd6fd3ac6bd32c572dc6a9c2a75b8f8 fix Issue 16536 - OSX mangling mismatch in dmd's C++/D ABI - just fix the specific dmd problem of picking up UINT64_TYPE (unsigned long long) on newer XCode/clang versions - the D mangling of ulong should eventually be fixed to always match uint64_t https://github.com/dlang/dmd/commit/131668b53dea8833e1d922f180800793e30703f2 Merge pull request #6180 from MartinNowak/fix16536 fix Issue 16536 - OSX mangling mismatch in dmd's C++/D ABI

And now: Undefined symbols for architecture x86_64: "choose_multiplier(int, unsigned long, int, unsigned long*, int*)", referenced from: cdmul(elem*, unsigned int*) in backend.a(cod2.o) "udiv_coefficients(int, unsigned long, int*, unsigned long*, int*)", referenced from: cdmul(elem*, unsigned int*) in backend.a(cod2.o) ld: symbol(s) not found for architecture x86_64 Looks like the prototype in cod2.c does not match the type (one is targ_ullong, one is ullong). I tried the obvious fix of changing the prototype in cod2.c, but it complains of not knowing what ullong is there. I'll let the more experienced take this :)

Commit pushed to stable at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/01a60612755c505350ebd26e701f46ec48255eda fix OSX64 ABI mismatch with divcoeff - also apply fix from #6180 (Issue 16536) to divcoeff.c - add comment that declarations must be kept in sync

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/3b34132a9dd6fd3ac6bd32c572dc6a9c2a75b8f8 fix Issue 16536 - OSX mangling mismatch in dmd's C++/D ABI https://github.com/dlang/dmd/commit/131668b53dea8833e1d922f180800793e30703f2 Merge pull request #6180 from MartinNowak/fix16536 https://github.com/dlang/dmd/commit/01a60612755c505350ebd26e701f46ec48255eda fix OSX64 ABI mismatch with divcoeff

Commits pushed to newCTFE at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/3b34132a9dd6fd3ac6bd32c572dc6a9c2a75b8f8 fix Issue 16536 - OSX mangling mismatch in dmd's C++/D ABI https://github.com/dlang/dmd/commit/131668b53dea8833e1d922f180800793e30703f2 Merge pull request #6180 from MartinNowak/fix16536 https://github.com/dlang/dmd/commit/01a60612755c505350ebd26e701f46ec48255eda fix OSX64 ABI mismatch with divcoeff