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authorViktor Dukhovni <ietf-dane@dukhovni.org>2021-04-18 01:37:39 -0400
committerMarge Bot <ben+marge-bot@smart-cactus.org>2021-04-22 17:00:54 -0400
commit350f4f61ae847c8adf376b9ca49ad1fee64e2e95 (patch)
treeb307732567a2e0a480bc99c0057cc49883c12cc2 /.gitlab-ci.yml
parent4723652a655f74f36f3503f8e09c6e674ea25790 (diff)
downloadhaskell-350f4f61ae847c8adf376b9ca49ad1fee64e2e95.tar.gz
Support R_X86_64_TLSGD relocation on FreeBSD
The FreeBSD C <ctype.h> header supports per-thread locales by exporting a static inline function that references the `_ThreadRuneLocale` thread-local variable. This means that object files that use e.g. isdigit(3) end up with TLSGD(19) relocations, and would not load into ghci or the language server. Here we add support for this type of relocation, for now just on FreeBSD, and only for external references to thread-specifics defined in already loaded dynamic modules (primarily libc.so). This is sufficient to resolve the <ctype.h> issues. Runtime linking of ".o" files which *define* new thread-specific variables would be noticeably more difficult, as this would likely require new rtld APIs.
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