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-rw-r--r--lib/CodeGen/DwarfWriter.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/DwarfWriter.cpp b/lib/CodeGen/DwarfWriter.cpp
index 8250558..f962e48 100644
--- a/lib/CodeGen/DwarfWriter.cpp
+++ b/lib/CodeGen/DwarfWriter.cpp
@@ -2196,6 +2196,11 @@ private:
/// 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).