[llvm-objdump] Print "..." instead of random data for virtual sections
When disassembling with -D, skip virtual sections by printing "..." for
each symbol.
This patch also implements `MachOObjectFile::isSectionVirtual`.
Test case comes from:
```
.zerofill __DATA,__common,_data64unsigned,472,3
```
Differential Revision: https://reviews.llvm.org/D45824
llvm-svn: 330342
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 718d574..5bea3a7 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -1494,6 +1494,13 @@
outs() << '\n' << std::get<1>(Symbols[si]) << ":\n";
+ // Don't print raw contents of a virtual section. A virtual section
+ // doesn't have any contents in the file.
+ if (Section.isVirtual()) {
+ outs() << "...\n";
+ continue;
+ }
+
#ifndef NDEBUG
raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
#else