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llvm-project/libcxx/lib/abi/CHANGELOG.TXT

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Add ABI Changelog and current symbol list for Linux llvm-svn: 284185
2016-10-14 10:27:44 +08:00
ABI Changelog
==============
This changelog contains information about ABI changes in libc++. Specifically
the addition and deletion of symbols from the libc++ dylib.
Each entry should start with the revision number followed by a description of
the change. The entry should contain a summary of the ABI changes made,
including what symbols were added, removed, or changed.
To generate a summary use "sym_diff.py" diffing against the appropriate ABI list.
Afterwards the ABI list should be updated to include the new changes.
New entries should be added directly below the "Version" header.
-----------
Version 4.0
-----------
Remove additional function template definitions from the dylib llvm-svn: 285537
2016-10-31 11:40:29 +08:00
* rTBD - Remove std::string::append template methods which should be inline
These functions should never have had visible definitions in the dylib but
since they were previously not specified with 'inline' they accidentally
got emitted. This change is non-ABI breaking because every "linkage unit"
must contain its own definition.
x86_64-linux-gnu
----------------
SYMBOL REMOVED: _ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendIPcEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorIS9_EE5valueERS5_E4typeES9_S9_
SYMBOL REMOVED: _ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendIPwEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorIS9_EE5valueERS5_E4typeES9_S9_
x86_64-apple-darwin16.0
-----------------------
No changes
[libcxx] Build with -fvisibility-inlines-hidden -- Remove 20 inline definitions from the dylib Summary: This patch turns on `-fvisibility-inlines-hidden` when building the dylib. This is important so that libc++.dylib doesn't accidentally export inline-functions which are ODR used somewhere in the dylib. On OS X this change has no effect on the current ABI of the dylib. Unfortunately on Linux there are already ~20 inline functions which are unintentionally exported by the dylib. Almost all of these are implicitly generated destructors. I believe removing these function definitions is safe because every "linkage unit" which uses these functions has its own definition, and therefore shouldn't be dependent on libc++.dylib to provide them. Also could a FreeBSD maintainer comment on the ABI compatibility of this patch? Reviewers: mclow.lists, emaste, dexonsmith, joker-eph-DISABLED, jroelofs, danalbert, mehdi_amini, compnerd, dim Subscribers: beanz, mgorny, cfe-commits, modocache Differential Revision: https://reviews.llvm.org/D25593 llvm-svn: 285101
2016-10-26 03:43:44 +08:00
Update revision number in CHANGELOG.TXT llvm-svn: 285102
2016-10-26 03:44:38 +08:00
* r285101 - Add -fvisibility-inlines-hidden when building libc++.
[libcxx] Build with -fvisibility-inlines-hidden -- Remove 20 inline definitions from the dylib Summary: This patch turns on `-fvisibility-inlines-hidden` when building the dylib. This is important so that libc++.dylib doesn't accidentally export inline-functions which are ODR used somewhere in the dylib. On OS X this change has no effect on the current ABI of the dylib. Unfortunately on Linux there are already ~20 inline functions which are unintentionally exported by the dylib. Almost all of these are implicitly generated destructors. I believe removing these function definitions is safe because every "linkage unit" which uses these functions has its own definition, and therefore shouldn't be dependent on libc++.dylib to provide them. Also could a FreeBSD maintainer comment on the ABI compatibility of this patch? Reviewers: mclow.lists, emaste, dexonsmith, joker-eph-DISABLED, jroelofs, danalbert, mehdi_amini, compnerd, dim Subscribers: beanz, mgorny, cfe-commits, modocache Differential Revision: https://reviews.llvm.org/D25593 llvm-svn: 285101
2016-10-26 03:43:44 +08:00
Although this change removes symbols, it should still be non-ABI breaking
since all of the definitions removed are inline functions. For this reason
removing these symbols is safe because every "linkage unit" which uses these
functions will contain their own definition.
x86_64-linux-gnu
----------------
SYMBOL REMOVED: _ZNSt12bad_any_castD0Ev
SYMBOL REMOVED: _ZNSt12experimental15fundamentals_v112bad_any_castD0Ev
SYMBOL REMOVED: _ZNSt3__114__codecvt_utf8IDiED0Ev
SYMBOL REMOVED: _ZNSt3__114__codecvt_utf8IDsED0Ev
SYMBOL REMOVED: _ZNSt3__114__codecvt_utf8IwED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IDiLb0EED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IDiLb1EED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IDsLb0EED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IDsLb1EED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IwLb0EED0Ev
SYMBOL REMOVED: _ZNSt3__115__codecvt_utf16IwLb1EED0Ev
SYMBOL REMOVED: _ZNSt3__117__assoc_sub_stateD0Ev
SYMBOL REMOVED: _ZNSt3__117__assoc_sub_stateD2Ev
SYMBOL REMOVED: _ZNSt3__117__libcpp_sscanf_lEPKcP15__locale_structS1_z
SYMBOL REMOVED: _ZNSt3__119__libcpp_asprintf_lEPPcP15__locale_structPKcz
SYMBOL REMOVED: _ZNSt3__119__libcpp_snprintf_lEPcmP15__locale_structPKcz
SYMBOL REMOVED: _ZNSt3__120__codecvt_utf8_utf16IDiED0Ev
SYMBOL REMOVED: _ZNSt3__120__codecvt_utf8_utf16IDsED0Ev
SYMBOL REMOVED: _ZNSt3__120__codecvt_utf8_utf16IwED0Ev
x86_64-apple-darwin16.0
-----------------------
No Changes - inline symbols are already hidden
Correct ABI changelog revision number llvm-svn: 284207
2016-10-14 14:47:37 +08:00
* r284206 - Implement C++17 aligned allocation in <new>
Implement P0035R4 -- Add C++17 aligned allocation functions Summary: This patch implements the library side of P0035R4. The implementation is thanks to @rsmith. In addition to the C++17 implementation, the library implementation can be explicitly turned on using `-faligned-allocation` in all dialects. Reviewers: mclow.lists, rsmith Subscribers: rsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D25591 llvm-svn: 284206
2016-10-14 14:46:30 +08:00
x86_64-linux-gnu
----------------
Symbol added: posix_memalign@GLIBC_2.2.5
Symbol added: _ZdaPvSt11align_val_t
Symbol added: _ZdlPvSt11align_val_t
Symbol added: _ZnamSt11align_val_t
Symbol added: _ZdaPvmSt11align_val_t
Symbol added: _ZdlPvmSt11align_val_t
Symbol added: _ZdlPvSt11align_val_tRKSt9nothrow_t
Symbol added: _ZnwmSt11align_val_tRKSt9nothrow_t
Symbol added: _ZnamSt11align_val_tRKSt9nothrow_t
Symbol added: _ZdaPvSt11align_val_tRKSt9nothrow_t
Symbol added: _ZnwmSt11align_val_t
Add ABI Changelog and current symbol list for Linux llvm-svn: 284185
2016-10-14 10:27:44 +08:00
* r283980 - Implement C++17 <optional>
x86_64-linux-gnu
----------------
Symbol added: _ZTISt19bad_optional_access
Symbol added: _ZNSt19bad_optional_accessD0Ev
Symbol added: _ZNSt19bad_optional_accessD1Ev
Symbol added: _ZNSt19bad_optional_accessD2Ev
Symbol added: _ZTVSt19bad_optional_access
Symbol added: _ZTSSt19bad_optional_access
Add ABI changelog entry for <any> llvm-svn: 284199
2016-10-14 13:10:06 +08:00
* r278310 - Implement C++17 <any>
x86_64-linux-gnu
----------------
Symbol added: _ZNKSt12bad_any_cast4whatEv
Symbol added: _ZNSt12bad_any_castD0Ev
Symbol added: _ZTISt12bad_any_cast
Symbol added: _ZTSSt12bad_any_cast
Symbol added: _ZTVSt12bad_any_cast