83ea47acd7
[test] Make tests pass regardless of gnu++14/gnu++17 default
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GCC from 11 onwards defaults to -std=gnu++17 for C++ source files. We want to do the same
(https://discourse.llvm.org/t/c-objc-switch-to-gnu-17-as-the-default-dialect/64360 ).
Split RUN lines, adjust `-verify`, or add `__cplusplus < 201703L` or `-Wno-dynamic-exception-spec`,
so that tests will pass regardless of gnu++14/gnu++17 default.
We have a desire to mark a test compatible with multiple language standards.
There are ongoing discussions how to add markers in the long term:
* https://discourse.llvm.org/t/iterating-lit-run-lines/62596
* https://discourse.llvm.org/t/lit-run-a-run-line-multiple-times-with-different-replacements/64932
As a workaround in the short term, add lit substitutions `%std_cxx98-`,
`%std_cxx11-14`, etc. They can be used for tests which work across multiple
language standards. If a range has `n` standards, run lit multiple times, with
`LIT_CLANG_STD_GROUP=0`, `LIT_CLANG_STD_GROUP=1`, etc to cover all `n` standards.
Reviewed By: #clang-language-wg, aaron.ballman
Differential Revision: https://reviews.llvm.org/D131464
2022-09-04 05:29:32 +00:00
57420b320c
type_info objects are not unnamed_addr: the ABI requires us to
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unique them and permits the implementation of dynamic_cast (and
anything else which knows it's working with a complete class
type) to compare their addresses directly.
rdar://16005328
llvm-svn: 201020
2014-02-08 03:26:05 +00:00
6774b1f1c1
Add -fcxx-exceptions to all tests that use C++ exceptions.
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llvm-svn: 126599
2011-02-28 00:40:07 +00:00
571e2ad042
Mark VTables and RTTI data linkonce_odr instead of weak_odr, with the exception of explicit template instantiations, which have to be weak_odr.
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This fixes PR6996.
llvm-svn: 124089
2011-01-24 00:46:19 +00:00
25f4620c67
Set unnamed_addr in every type info.
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llvm-svn: 123293
2011-01-11 23:55:05 +00:00
b3732bb3b7
Just disable the hidden-visibility optimization for now by hiding it behind
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a -cc1 option. The Darwin linker complains about mixed visibility when linking
gcc-built objects with clang-built objects, and the optimization isn't really
that valuable. Platforms with less ornery linkers can feel free to enable this.
llvm-svn: 110979
2010-08-12 23:36:15 +00:00
e16adc2b1e
Emit standard-library RTTI with external linkage, not weak_odr.
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Apply hidden visibility to most RTTI; libstdc++ does not rely on exact
pointer equality for the type info (just the type info names). Apply
the same optimization to RTTI that we do to vtables.
Fixes PR5962.
llvm-svn: 110192
2010-08-04 08:34:44 +00:00
48bf349471
Fix -fno-rtti -fexceptions by forcing the emission of (non-"builtin") RTTI
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when used by the exceptions routines. Fixes PR 6974.
llvm-svn: 102684
2010-04-30 01:15:21 +00:00
Fangrui Song