[llvm-commits] [llvm] r42277 - /llvm/trunk/lib/CodeGen/DwarfWriter.cpp

[Dan Gohman]

Author: djg
Date: Mon Sep 24 16:43:52 2007
New Revision: 42277

URL: http://llvm.org/viewvc/llvm-project?rev=42277&view=rev
Log:
Don't emit .debug_line header data if there aren't any lines to put in it,
such as will happen when .loc directives are used.

Modified:
    llvm/trunk/lib/CodeGen/DwarfWriter.cpp

Modified: llvm/trunk/lib/CodeGen/DwarfWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/DwarfWriter.cpp?rev=42277&r1=42276&r2=42277&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/DwarfWriter.cpp (original)
+++ llvm/trunk/lib/CodeGen/DwarfWriter.cpp Mon Sep 24 16:43:52 2007
@@ -2196,6 +2196,11 @@
   /// EmitDebugLines - Emit source line information.
   ///
   void EmitDebugLines() {
+    // If there are no lines to emit (such as when we're using .loc directives
+    // to emit .debug_line information) don't emit a .debug_line header.
+    if (SectionSourceLines.empty())
+      return;
+
     // Minimum line delta, thus ranging from -10..(255-10).
     const int MinLineDelta = -(DW_LNS_fixed_advance_pc + 1);
     // Maximum line delta, thus ranging from -10..(255-10).