When building with LTO, WebKit's 'check-for-weak-vtables-and-externals' script reports weak external symbols: ERROR: WebKit has a weak external symbol in it (.../OpenSource/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit) ERROR: A weak external symbol is generated when a symbol is defined in multiple compilation units and is also marked as being exported from the library. ERROR: A common cause of weak external symbols is when an inline function is listed in the linker export file. ERROR: symbol __ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_13basic_istreamIcS2_EE ERROR: symbol __ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_14basic_iostreamIcS2_EE ERROR: symbol __ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE16_NS_13basic_ostreamIcS2_EE ERROR: symbol __ZTTNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE ERROR: symbol __ZTVNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE ERROR: symbol __ZTVNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE Command /bin/sh failed with exit code 1 Address these by adding those symbols to UNEXPORTED_SYMBOL_LDFLAGS in WebKit.xcconfig.
<rdar://problem/41386438>
Created attachment 343398 [details] Patch
Comment on attachment 343398 [details] Patch Attachment 343398 [details] did not pass win-ews (win): Output: https://webkit-queues.webkit.org/results/8304706 New failing tests: http/tests/security/canvas-remote-read-remote-video-blocked-no-crossorigin.html
Created attachment 343435 [details] Archive of layout-test-results from ews200 for win-future The attached test failures were seen while running run-webkit-tests on the win-ews. Bot: ews200 Port: win-future Platform: CYGWIN_NT-6.1-2.9.0-0.318-5-3-x86_64-64bit
This patch affects a *Mac build*, and can't affect a *Windows layout test*.
Comment on attachment 343398 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=343398&action=review r=me > Source/WebKit/Configurations/WebKit.xcconfig:118 > +UNEXPORTED_SYMBOL_LDFLAGS = -Wl,-unexported_symbol -Wl,__ZTISt9bad_alloc -Wl,-unexported_symbol -Wl,__ZTISt9exception -Wl,-unexported_symbol -Wl,__ZTSSt9bad_alloc -Wl,-unexported_symbol -Wl,__ZTSSt9exception -Wl,-unexported_symbol -Wl,__ZdlPvS_ -Wl,-unexported_symbol -Wl,__ZnwmPv -Wl,-unexported_symbol -Wl,__Znwm -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEC2EOS4_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEC1EOS4_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEaSEDn -Wl,-unexported_symbol -Wl,__ZNKSt3__18functionIFvN7WebCore12PolicyActionEEEclES2_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEE4swapERS4_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEC1ERKS4_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEC2ERKS4_ -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEED1Ev -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEED2Ev -Wl,-unexported_symbol -Wl,__ZNSt3__18functionIFvN7WebCore12PolicyActionEEEaSERKS4_ -Wl,-unexported_symbol -Wl,__ZTVNSt3__117bad_function_callE -Wl,-unexported_symbol -Wl,__ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_13basic_istreamIcS2_EE -Wl,-unexported_symbol -Wl,__ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_14basic_iostreamIcS2_EE -Wl,-unexported_symbol -Wl,__ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE16_NS_13basic_ostreamIcS2_EE -Wl,-unexported_symbol -Wl,__ZTTNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE -Wl,-unexported_symbol -Wl,__ZTVNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE -Wl,-unexported_symbol -Wl,__ZTVNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE -Wl,-unexported_symbol -Wl,__ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE8_NS_13basic_ostreamIcS2_EE; In the future, this should really be moved to a *.unexp file like was done in WebCore; makes maintenance MUCH easier: Source/WebCore/Configurations/WebCore.unexp
Comment on attachment 343398 [details] Patch Clearing flags on attachment: 343398 Committed r233168: <https://trac.webkit.org/changeset/233168>
All reviewed patches have been landed. Closing bug.