[PATCH] D65396: [llvm/Object] - Add a test for "empty string table" error.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jhenderson, MaskRay.

This error was never tested. In this patch I improved
the error message, added the test case and also simplified
the code that processes a similar error right below.


https://reviews.llvm.org/D65396

Files:
  include/llvm/Object/ELF.h
  test/Object/invalid.test


Index: test/Object/invalid.test
===================================================================
--- test/Object/invalid.test
+++ test/Object/invalid.test
@@ -606,3 +606,24 @@
   Type:     ET_REL
   Machine:  EM_X86_64
   SHOffset: 0xffffffffffffffff
+
+## Check that llvm-objdump reports an error when it tries to dump a
+## symbol name and .strtab is not empty.
+
+# RUN: yaml2obj %s --docnum=29 -o %t29
+# RUN: not llvm-objdump -syms %t29 2>&1 | FileCheck -DFILE=%t29 --check-prefix=STRTAB-EMPTY2 %s
+
+# STRTAB-EMPTY2: error: '[[FILE]]': SHT_STRTAB string table section [index 1] is empty
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_DYN
+  Machine: EM_X86_64
+Sections:
+  - Name: .strtab
+    Type: SHT_STRTAB
+    Content: ""
+Symbols:
+  - Name: foo
Index: include/llvm/Object/ELF.h
===================================================================
--- include/llvm/Object/ELF.h
+++ include/llvm/Object/ELF.h
@@ -599,12 +599,10 @@
     return V.takeError();
   ArrayRef<char> Data = *V;
   if (Data.empty())
-    // TODO: this error is untested.
-    return createError("empty string table");
+    return createError("SHT_STRTAB string table section " +
+                       getSecIndexForError(this, Section) + " is empty");
   if (Data.back() != '\0')
-    return createError(object::getELFSectionTypeName(getHeader()->e_machine,
-                                                     Section->sh_type) +
-                       " string table section " +
+    return createError("SHT_STRTAB string table section " +
                        getSecIndexForError(this, Section) +
                        " is non-null terminated");
   return StringRef(Data.begin(), Data.size());


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D65396.212156.patch
Type: text/x-patch
Size: 1737 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20190729/ff4e4563/attachment.bin>