[dwarfdump] Fix off-by-one bug in accelerator table extractor.
This fixes a bug where the verifier was complaining about empty
accelerator tables. When the table is empty, its size is not a valid
offset as it points after the end of the section.
This patch also makes the extractor return llvm:Error instead of bool
for better error reporting in the verifier.
Differential revision: https://reviews.llvm.org/D41063
rdar://35932007
llvm-svn: 320399
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
index 8e07bb3..3d47369 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFVerifier.cpp
@@ -686,8 +686,8 @@
}
// Verify that the section is not too short.
- if (!AccelTable.extract()) {
- error() << "Section is smaller than size described in section header.\n";
+ if (Error E = AccelTable.extract()) {
+ error() << toString(std::move(E)) << '\n';
return 1;
}