commit f10f3c974b345da8fe93783952b192eab84aadf2
author Martin Storsjo <martin@martin.st> Fri Oct 27 07:59:01 2017 +0000
committer Martin Storsjo <martin@martin.st> Fri Oct 27 07:59:01 2017 +0000
tree d9af8fcf3ab530c369afe5697ffb5ff2a8e102d5
parent 5309ca8bb33ed047823f989d7e492d4ed7e77fb4

Express Registers_*::lastDwarfReg using _LIBUNWIND_HIGHEST_DWARF_REGISTER

This avoids having to keep the same information duplicated in multiple
places.

Adjust _LIBUNWIND_HIGHEST_DWARF_REGISTER to actually have the value
of the highest used register and only use the value
_LIBUNWIND_HIGHEST_DWARF_REGISTER + 1 (kMaxRegisterNumber + 1) for
allocating the savedRegisters array.

Differential Revision: https://reviews.llvm.org/D39281

llvm-svn: 316745
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 62dd9d20d5dc37bf5dfda14f40fd6c7013a24096

src/DwarfParser.hpp

diff --git a/src/DwarfParser.hpp b/src/DwarfParser.hpp
index d45ad49..95af7a6 100644
--- a/src/DwarfParser.hpp
+++ b/src/DwarfParser.hpp
@@ -87,7 +87,7 @@
     uint32_t          codeOffsetAtStackDecrement;
     bool              registersInOtherRegisters;
     bool              sameValueUsed;
-    RegisterLocation  savedRegisters[kMaxRegisterNumber];
+    RegisterLocation  savedRegisters[kMaxRegisterNumber + 1];
   };
 
   struct PrologInfoStackEntry {