llvm · Mar 21, 2019
diff --git a/‎llvm/lib/Object/IRObjectFile.cpp
Lines changed: 2 additions & 0 deletions b/‎llvm/lib/Object/IRObjectFile.cpp
Lines changed: 2 additions & 0 deletions
diff --git a/‎llvm/test/Object/Inputs/macho-bitcode-marker-x86_64.o
840 Bytes b/‎llvm/test/Object/Inputs/macho-bitcode-marker-x86_64.o
840 Bytes
diff --git a/‎llvm/test/Object/Inputs/macho-bitcode-x86_64.o
3.52 KB b/‎llvm/test/Object/Inputs/macho-bitcode-x86_64.o
3.52 KB
diff --git a/‎llvm/test/Object/nm-bitcode.test
Lines changed: 12 additions & 0 deletions b/‎llvm/test/Object/nm-bitcode.test
Lines changed: 12 additions & 0 deletions
@@ -78,6 +78,8 @@ IRObjectFile::findBitcodeInObject(const ObjectFile &Obj) {
       StringRef SecContents;
       if (std::error_code EC = Sec.getContents(SecContents))
         return errorCodeToError(EC);
+      if (SecContents.size() <= 1)
+        return errorCodeToError(object_error::bitcode_section_not_found);
       return MemoryBufferRef(SecContents, Obj.getFileName());
     }
   }
 
@@ -0,0 +1,12 @@
+# Inputs generated with:
+# echo 'int hello() { return 5; }' > test.c
+# clang -O -fembed-bitcode -c -o macho-bitcode-x86_64.o test.c
+# clang -O -fembed-bitcode-marker -c -o macho-bitcode-marker-x86_64.o test.c
+
+RUN: llvm-nm -a %p/Inputs/macho-bitcode-x86_64.o \
+RUN:         | FileCheck %s
+
+RUN: llvm-nm -a %p/Inputs/macho-bitcode-marker-x86_64.o \
+RUN:         | FileCheck %s
+
+CHECK: T _hello
Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,8 @@ IRObjectFile::findBitcodeInObject(const ObjectFile &Obj) {`
`78`	`78`	`StringRef SecContents;`
`79`	`79`	`if (std::error_code EC = Sec.getContents(SecContents))`
`80`	`80`	`return errorCodeToError(EC);`
	`81`	`+ if (SecContents.size() <= 1)`
	`82`	`+ return errorCodeToError(object_error::bitcode_section_not_found);`
`81`	`83`	`return MemoryBufferRef(SecContents, Obj.getFileName());`
`82`	`84`	`}`
`83`	`85`	`}`