Message 379704 - Python tracker

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Author	vstinner
Recipients	cstratak, hroncok, pablogsal, petr.viktorin, vstinner
Date	2020-10-27.00:28:08
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1603758489.02.0.75717665693.issue42164@roundup.psfhosted.org>
In-reply-to

Content
With LTO, compile.o requires an undefined _Py_Mangle symbol: $ gcc -pthread -c -DNDEBUG -fwrapv -O3 -std=c99 -fvisibility=hidden -flto -I./Include/internal -I. -I./Include -DPy_BUILD_CORE -o Python/compile.o Python/compile.c; nm Python/compile.o \| grep _Py_Mangle U _Py_Mangle Without LTO, compile.o defines _Py_Mangle symbol: $ gcc -pthread -c -DNDEBUG -fwrapv -O3 -std=c99 -fvisibility=hidden -I./Include/internal -I. -I./Include -DPy_BUILD_CORE -o Python/compile.o Python/compile.c; nm Python/compile.o \| grep _Py_Mangle 0000000000003c20 T _Py_Mangle

With LTO, compile.o requires an undefined _Py_Mangle symbol:

$ gcc -pthread -c -DNDEBUG -fwrapv -O3 -std=c99 -fvisibility=hidden -flto -I./Include/internal  -I. -I./Include -DPy_BUILD_CORE -o Python/compile.o Python/compile.c; nm Python/compile.o | grep _Py_Mangle

         U _Py_Mangle


Without LTO, compile.o defines _Py_Mangle symbol:

$ gcc -pthread -c -DNDEBUG -fwrapv -O3 -std=c99 -fvisibility=hidden -I./Include/internal  -I. -I./Include -DPy_BUILD_CORE -o Python/compile.o Python/compile.c; nm Python/compile.o | grep _Py_Mangle

0000000000003c20 T _Py_Mangle

History
Date	User	Action	Args
2020-10-27 00:28:09	vstinner	set	recipients: + vstinner, petr.viktorin, cstratak, hroncok, pablogsal
2020-10-27 00:28:09	vstinner	set	messageid: <1603758489.02.0.75717665693.issue42164@roundup.psfhosted.org>
2020-10-27 00:28:09	vstinner	link	issue42164 messages
2020-10-27 00:28:08	vstinner	create