dwarf: fix stepping through an inline loop containing one statement

Previously, stepping from the single statement within the loop would
always exit the loop because all of the code unrolled from the loop is
associated with the same line and treated by the debugger as one line.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/codegen/c.zig b/src/codegen/c.zig
index 0410023588..56466b4395 100644
--- a/src/codegen/c.zig
+++ b/src/codegen/c.zig
@@ -3289,6 +3289,7 @@ fn genBodyInner(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail,
             .try_ptr_cold => try airTryPtr(f, inst),
 
             .dbg_stmt => try airDbgStmt(f, inst),
+            .dbg_empty_stmt => try airDbgEmptyStmt(f, inst),
             .dbg_var_ptr, .dbg_var_val, .dbg_arg_inline => try airDbgVar(f, inst),
 
             .float_from_int,
@@ -4601,6 +4602,11 @@ fn airDbgStmt(f: *Function, inst: Air.Inst.Index) !CValue {
     return .none;
 }
 
+fn airDbgEmptyStmt(f: *Function, _: Air.Inst.Index) !CValue {
+    try f.object.writer().writeAll("(void)0;\n");
+    return .none;
+}
+
 fn airDbgInlineBlock(f: *Function, inst: Air.Inst.Index) !CValue {
     const pt = f.object.dg.pt;
     const zcu = pt.zcu;