[clang] b2a4f64 - [clang-format][NFC] Skip ObjCHeaderStyleGuesser for empty code (#82957)

[via cfe-commits]

Author: Owen Pan
Date: 2024-02-26T20:46:46-08:00
New Revision: b2a4f64e19247d0553d3dc63af62b652664c3cd6

URL: https://github.com/llvm/llvm-project/commit/b2a4f64e19247d0553d3dc63af62b652664c3cd6
DIFF: https://github.com/llvm/llvm-project/commit/b2a4f64e19247d0553d3dc63af62b652664c3cd6.diff

LOG: [clang-format][NFC] Skip ObjCHeaderStyleGuesser for empty code (#82957)

Added: 
    

Modified: 
    clang/lib/Format/Format.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 794e326fb1c948..13588ff705f544 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -3923,7 +3923,7 @@ FormatStyle::LanguageKind guessLanguage(StringRef FileName, StringRef Code) {
     auto Extension = llvm::sys::path::extension(FileName);
     // If there's no file extension (or it's .h), we need to check the contents
     // of the code to see if it contains Objective-C.
-    if (Extension.empty() || Extension == ".h") {
+    if (!Code.empty() && (Extension.empty() || Extension == ".h")) {
       auto NonEmptyFileName = FileName.empty() ? "guess.h" : FileName;
       Environment Env(Code, NonEmptyFileName, /*Ranges=*/{});
       ObjCHeaderStyleGuesser Guesser(Env, getLLVMStyle());