[PATCH] D103938: Diagnose -Wunused-value based on CFG reachability

[Yuanfang Chen via Phabricator via cfe-commits]

ychen updated this revision to Diff 374078.
ychen edited the summary of this revision.
ychen added a comment.
Herald added a project: libc++.
Herald added a subscriber: libcxx-commits.
Herald added a reviewer: libc++.
This revision now requires review to proceed.

- Check the scope correctly: first line of `DiagIfReachable` should be `getCurFunctionOrMethodDecl()`. And the `FunctionScopes` should be kept to deal with `requires` expression where `FunctionScopes` could be empty.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103938/new/

https://reviews.llvm.org/D103938

Files:
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/include/clang/Sema/Sema.h
  clang/lib/Sema/SemaExpr.cpp
  clang/lib/Sema/SemaExprCXX.cpp
  clang/lib/Sema/SemaStmt.cpp
  clang/test/Analysis/dead-stores.c
  clang/test/CXX/basic/basic.link/p8.cpp
  clang/test/CXX/drs/dr14xx.cpp
  clang/test/CXX/drs/dr20xx.cpp
  clang/test/CXX/drs/dr7xx.cpp
  clang/test/CXX/temp/temp.constr/temp.constr.constr/partial-specializations.cpp
  clang/test/CodeCompletion/pragma-macro-token-caching.c
  clang/test/Frontend/fixed_point_crash.c
  clang/test/PCH/cxx-explicit-specifier.cpp
  clang/test/Parser/cxx-ambig-decl-expr.cpp
  clang/test/Parser/cxx0x-ambig.cpp
  clang/test/Parser/cxx1z-init-statement.cpp
  clang/test/Parser/objc-messaging-1.m
  clang/test/Parser/objc-try-catch-1.m
  clang/test/Parser/objcxx11-attributes.mm
  clang/test/Sema/const-eval.c
  clang/test/Sema/exprs.c
  clang/test/Sema/i-c-e.c
  clang/test/Sema/sizeless-1.c
  clang/test/Sema/switch-1.c
  clang/test/Sema/vla-2.c
  clang/test/Sema/warn-type-safety.c
  clang/test/Sema/warn-unused-value.c
  clang/test/SemaCXX/attr-annotate.cpp
  clang/test/SemaCXX/builtin-constant-p.cpp
  clang/test/SemaCXX/constant-expression-cxx2a.cpp
  clang/test/SemaCXX/constant-expression.cpp
  clang/test/SemaCXX/expression-traits.cpp
  clang/test/SemaCXX/matrix-type-operators.cpp
  clang/test/SemaCXX/overloaded-operator.cpp
  clang/test/SemaCXX/sizeless-1.cpp
  clang/test/SemaCXX/vector.cpp
  clang/test/SemaCXX/warn-comma-operator.cpp
  clang/test/SemaCXX/warn-unused-value.cpp
  clang/test/SemaTemplate/derived.cpp
  clang/test/SemaTemplate/lambda-capture-pack.cpp
  libcxx/include/variant

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