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| author | Haojian Wu <hokein.wu@gmail.com> | 2022-08-11 23:09:27 +0200 |
|---|---|---|
| committer | Haojian Wu <hokein.wu@gmail.com> | 2022-08-12 13:46:26 +0200 |
| commit | a1a1a78ac8cf837e4c05152c9715f399b33bfb59 (patch) | |
| tree | 913b3879ceb317b423f02290323699b8d62f1572 /clang-tools-extra/pseudo | |
| parent | 435feefbdd6c91faf24fa5e69c4e7c3bc127568a (diff) | |
| download | llvm-a1a1a78ac8cf837e4c05152c9715f399b33bfb59.tar.gz | |
[pseudo] Eliminate an ambiguity for the empty member declaration.
We happened to introduce a `member-declaration := ;` rule
when inlining the `member-declaration := decl-specifier-seq_opt
member-declarator-list_opt ;`.
And with the `member-declaration := empty-declaration` rule, we had two parses of `;`.
This patch is to restrict the grammar to eliminate the
`member-declaration := ;` rule.
Differential Revision: https://reviews.llvm.org/D131724
Diffstat (limited to 'clang-tools-extra/pseudo')
| -rw-r--r-- | clang-tools-extra/pseudo/lib/cxx/cxx.bnf | 3 | ||||
| -rw-r--r-- | clang-tools-extra/pseudo/test/cxx/empty-member-declaration.cpp | 7 |
2 files changed, 9 insertions, 1 deletions
diff --git a/clang-tools-extra/pseudo/lib/cxx/cxx.bnf b/clang-tools-extra/pseudo/lib/cxx/cxx.bnf index 5f1cba450394..d5cc0a9d2c85 100644 --- a/clang-tools-extra/pseudo/lib/cxx/cxx.bnf +++ b/clang-tools-extra/pseudo/lib/cxx/cxx.bnf @@ -557,7 +557,8 @@ class-key := STRUCT class-key := UNION member-specification := member-declaration member-specification_opt member-specification := access-specifier : member-specification_opt -member-declaration := decl-specifier-seq_opt member-declarator-list_opt ; +member-declaration := decl-specifier-seq member-declarator-list_opt ; +member-declaration := member-declarator-list ; member-declaration := function-definition member-declaration := using-declaration member-declaration := using-enum-declaration diff --git a/clang-tools-extra/pseudo/test/cxx/empty-member-declaration.cpp b/clang-tools-extra/pseudo/test/cxx/empty-member-declaration.cpp new file mode 100644 index 000000000000..2540dd010fce --- /dev/null +++ b/clang-tools-extra/pseudo/test/cxx/empty-member-declaration.cpp @@ -0,0 +1,7 @@ +// RUN: clang-pseudo -grammar=cxx -source=%s --print-forest --forest-abbrev=false | FileCheck %s +class A { + ; +// CHECK-NOT: member-declaration := ; +// CHECK: member-declaration := empty-declaration +// CHECK-NOT: member-declaration := ; +}; |