commit 9106228a553f4dc291a73eff1ff7c50141b383be
author Ryan Macnak <rmacnak@google.com> Mon Sep 24 23:21:15 2018 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> Mon Sep 24 23:21:15 2018 +0000
tree ae69ff8e883846d3dea9ae1227703a8c5a4ff313
parent 6ce0dc0006ccf0ab91f9c49644a75904e52c8198

[vm, dwarf] Set default_is_stmt to true for compatability with dsymutil.

dsymutil is unable to merge line number programs will different values of default_is_stmt, and either it or the linker is implicitly adding one where this value is true.

Change-Id: I68d55ff46f97bfdeb83ca71fcc9a1069f460a107
Reviewed-on: https://dart-review.googlesource.com/76306
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>

runtime/vm/dwarf.cc

diff --git a/runtime/vm/dwarf.cc b/runtime/vm/dwarf.cc
index 8b2b14c..7ab10b9 100644
--- a/runtime/vm/dwarf.cc
+++ b/runtime/vm/dwarf.cc
@@ -484,7 +484,7 @@
   Print(".Llineheader_start:\n");
 
   u1(1);   // 4. minimum_instruction_length
-  u1(0);   // 5. default_is_stmt
+  u1(1);   // 5. default_is_stmt (true for compatibility with dsymutil).
   u1(0);   // 6. line_base
   u1(1);   // 7. line_range
   u1(13);  // 8. opcode_base (12 standard opcodes in Dwarf 2)