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| author | Nathan Sidwell <nathan@acm.org> | 2022-10-10 17:55:04 -0400 |
|---|---|---|
| committer | Nathan Sidwell <nathan@acm.org> | 2022-10-10 18:13:47 -0400 |
| commit | c7cb239f51788dbe3148368942b208934707b6a7 (patch) | |
| tree | 5623c918585a6fb4aa69910b91dc982d2100933d /gcc/c-family | |
| parent | 29b0fe393859729215b0db5d28f2faea30c6ec32 (diff) | |
| download | gcc-c7cb239f51788dbe3148368942b208934707b6a7.zip gcc-c7cb239f51788dbe3148368942b208934707b6a7.tar.gz gcc-c7cb239f51788dbe3148368942b208934707b6a7.tar.bz2 | |
c++: Lambda context mangling
VAR and FIELD decls can become part of a lambda context, when the
lambda is 'attached' to that entity (It's a C++20 ODR thing that was
discovered with modules, but is actually separate.) We were not
marking those decls as substitution candidates, leading to demangling
failures and variance from other compilers.
This patch bumps the ABI, and adds the contexts them to the
substitution table. This is the intent of the ABI.
gcc/
* common.opt (-fabi-version=): Document 18.
* doc/invoke.texi (-fabi-version): Document 18.
gcc/c-family/
* c-opts.cc (c_common_post_options): Bump abi to 18.
gcc/cp/
* mangle.cc (write_prefix): Add VAR_DECL & FIELD_DECL to
substitution table under abi=18. Note possible mismatch.
gcc/testsuite/
* g++.dg/abi/lambda-ctx1-17.C: New.
* g++.dg/abi/lambda-ctx1-18.C: New.
* g++.dg/abi/lambda-ctx1-18vs17.C: New.
* g++.dg/abi/lambda-ctx1.h: New.
* g++.dg/abi/lambda-vis.C: Adjust expected mangles.
* g++.dg/abi/macro0.C: Adjust.
Diffstat (limited to 'gcc/c-family')
| -rw-r--r-- | gcc/c-family/c-opts.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/c-family/c-opts.cc b/gcc/c-family/c-opts.cc index babaa2f..55cebf6 100644 --- a/gcc/c-family/c-opts.cc +++ b/gcc/c-family/c-opts.cc @@ -975,7 +975,7 @@ c_common_post_options (const char **pfilename) /* Change flag_abi_version to be the actual current ABI level, for the benefit of c_cpp_builtins, and to make comparison simpler. */ - const int latest_abi_version = 17; + const int latest_abi_version = 18; /* Generate compatibility aliases for ABI v13 (8.2) by default. */ const int abi_compat_default = 13; |