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[clang] fix a compilation bug 

With gcc 6.3.0, I hit the following compilation bug:
  /home/yhs/work/llvm-project/clang/lib/Frontend/CompilerInvocation.cpp:
  In function ‘bool ParseCodeGenArgs(clang::CodeGenOptions&, llvm::opt::ArgList&,
  clang::InputKind, clang::DiagnosticsEngine&, const clang::TargetOptions&,
  const clang::FrontendOptions&)’:
  /home/yhs/work/llvm-project/clang/lib/Frontend/CompilerInvocation.cpp:780:12:
    error: unused variable ‘A’ [-Werror=unused-variable]
     if (Arg *A = Args.getLastArg(OPT_fuse_ctor_homing))
              ^
  cc1plus: all warnings being treated as errors

The bug is introduced by Commit ae6523cd62 ("[DebugInfo] Add
-fuse-ctor-homing cc1 flag so we can turn on constructor homing only
if limited debug info is already on.")
This commit is contained in:
Yonghong Song 2020-08-16 21:49:13 -07:00
parent fcd2969da9
commit 000ad1a976
1 changed files with 1 additions and 1 deletions
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2
clang/lib/Frontend/CompilerInvocation.cpp
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@ -777,7 +777,7 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
}
// If -fuse-ctor-homing is set and limited debug info is already on, then use
// constructor homing.
if (Arg *A = Args.getLastArg(OPT_fuse_ctor_homing))
if (Args.getLastArg(OPT_fuse_ctor_homing))
if (Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo)
Opts.setDebugInfo(codegenoptions::DebugInfoConstructor);