Think this will fix issues with the error messages generated for malformed-archives.test

in r277177 and added back this test which was deleted in r277196 while
I tracked down these problems.

Changed from constructing Twine's to std::string's as Twine's don't work
across statements.  Also removed a few unneeded Twine() constructions.

Fix the write_escaped() calls to not pass the unintended second argument
fixing the warning on the ld-x86_64-win7 bot.

llvm-svn: 277223

llvm/lib/Object/Archive.cpp

@@ -45,15 +45,15 @@ ArchiveMemberHeader::ArchiveMemberHeader(const Archive *Parent,
 
   if (Size < sizeof(ArMemHdrType)) {
     if (Err) {
-      Twine Msg("remaining size of archive too small for next archive member "
+      std::string Msg("remaining size of archive too small for next archive "
-                "header ");
+                      "member header ");
       Expected<StringRef> NameOrErr = getName(Size);
       if (!NameOrErr) {
         consumeError(NameOrErr.takeError());
         uint64_t Offset = RawHeaderPtr - Parent->getData().data();
         *Err = malformedError(Msg + "at offset " + Twine(Offset));
       } else
-        *Err = malformedError(Msg + "for " + Twine(NameOrErr.get()));
+        *Err = malformedError(Msg + "for " + NameOrErr.get());
     }
     return;
   }
@@ -64,15 +64,16 @@ ArchiveMemberHeader::ArchiveMemberHeader(const Archive *Parent,
       OS.write_escaped(llvm::StringRef(ArMemHdr->Terminator,
                                        sizeof(ArMemHdr->Terminator)));
       OS.flush();
-      Twine Msg("terminator characters in archive member \"" + Buf + "\" not "
+      std::string Msg("terminator characters in archive member \"" + Buf +
-                "the correct \"`\\n\" values for the archive member header ");
+                      "\" not the correct \"`\\n\" values for the archive "
+                      "member header ");
       Expected<StringRef> NameOrErr = getName(Size);
       if (!NameOrErr) {
         consumeError(NameOrErr.takeError());
         uint64_t Offset = RawHeaderPtr - Parent->getData().data();
         *Err = malformedError(Msg + "at offset " + Twine(Offset));
       } else
-        *Err = malformedError(Msg + "for " + Twine(NameOrErr.get()));
+        *Err = malformedError(Msg + "for " + NameOrErr.get());
     }
     return;
   }
@@ -139,8 +140,7 @@ Expected<StringRef> ArchiveMemberHeader::getName(uint64_t Size) const {
     if (Name.substr(1).rtrim(' ').getAsInteger(10, StringOffset)) {
       std::string Buf;
       raw_string_ostream OS(Buf);
-      OS.write_escaped(Name.substr(1).rtrim(' '),
+      OS.write_escaped(Name.substr(1).rtrim(' '));
-                                       sizeof(Name.substr(1)).rtrim(' '));
       OS.flush();
       uint64_t ArchiveOffset = reinterpret_cast<const char *>(ArMemHdr) -
                                Parent->getData().data();
@@ -172,8 +172,7 @@ Expected<StringRef> ArchiveMemberHeader::getName(uint64_t Size) const {
     if (Name.substr(3).rtrim(' ').getAsInteger(10, NameLength)) {
       std::string Buf;
       raw_string_ostream OS(Buf);
-      OS.write_escaped(Name.substr(3).rtrim(' '),
+      OS.write_escaped(Name.substr(3).rtrim(' '));
-                                       sizeof(Name.substr(3)).rtrim(' '));
       OS.flush();
       uint64_t ArchiveOffset = reinterpret_cast<const char *>(ArMemHdr) -
                         Parent->getData().data();
@@ -316,8 +315,7 @@ Archive::Child::Child(const Archive *Parent, const char *Start, Error *Err)
       if (Err) {
         std::string Buf;
         raw_string_ostream OS(Buf);
-        OS.write_escaped(Name.substr(3).rtrim(' '),
+        OS.write_escaped(Name.substr(3).rtrim(' '));
-                                         sizeof(Name.substr(3)).rtrim(' '));
         OS.flush();
         uint64_t Offset = Start - Parent->getData().data();
         *Err = malformedError("long name length characters after the #1/ are "
@@ -407,15 +405,15 @@ Expected<Archive::Child> Archive::Child::getNext() const {
 
   // Check to see if this is past the end of the archive.
   if (NextLoc > Parent->Data.getBufferEnd()) {
-    Twine Msg("offset to next archive member past the end of the archive after "
+    std::string Msg("offset to next archive member past the end of the archive "
-              "member ");
+                    "after member ");
     Expected<StringRef> NameOrErr = getName();
     if (!NameOrErr) {
       consumeError(NameOrErr.takeError());
       uint64_t Offset = Data.data() - Parent->getData().data();
       return malformedError(Msg + "at offset " + Twine(Offset));
     } else
-      return malformedError(Msg + Twine(NameOrErr.get()));
+      return malformedError(Msg + NameOrErr.get());
   }
 
   Error Err;

llvm/test/tools/llvm-objdump/malformed-archives.test

@@ -0,0 +1,60 @@
+// These test checks that llvm-objdump will not crash with malformed Archive
+// files.  So the check line is not all that important but the bug fixes to
+// make sure llvm-objdump is robust is what matters.
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus1.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus1 %s 
+
+# bogus1: libbogus1.a': truncated or malformed archive (characters in size field in archive header are not all decimal numbers: '10%' for archive member header at offset 8)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus2.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus2 %s 
+
+# bogus2: libbogus2.a': truncated or malformed archive (characters in size field in archive header are not all decimal numbers: '1%' for archive member header at offset 170)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus3.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus3 %s 
+
+# bogus3: libbogus3.a': truncated or malformed archive (offset to next archive member past the end of the archive after member foo.c)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus4.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus4 %s 
+
+# bogus4: libbogus4.a': truncated or malformed archive (remaining size of archive too small for next archive member header for foo.c)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus5.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus5 %s 
+
+# bogus5: libbogus5.a': truncated or malformed archive (terminator characters in archive member "@\n" not the correct "`\n" values for the archive member header for hello.c)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus6.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus6 %s 
+
+# bogus6: libbogus6.a': truncated or malformed archive (name contains a leading space for archive member header at offset 96)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus7.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus7 %s 
+
+# bogus7: libbogus7.a': truncated or malformed archive (long name length characters after the #1/ are not all decimal numbers: '@123$' for archive member header at offset 8)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN:   %p/Inputs/libbogus8.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus8 %s 
+
+# bogus8: libbogus8.a(???) truncated or malformed archive (long name length: 1234 extends past the end of the member or archive for archive member header at offset 86)
+
+# RUN: not llvm-objdump -s %p/Inputs/libbogus9.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus9 %s 
+
+# bogus9: libbogus9.a(???) truncated or malformed archive (long name offset characters after the '/' are not all decimal numbers: '&a25*' for archive member header at offset 94)
+
+# RUN: not llvm-objdump -s %p/Inputs/libbogus10.a \
+# RUN:   2>&1 | FileCheck -check-prefix=bogus10 %s 
+
+# bogus10: libbogus10.a(???) truncated or malformed archive (long name offset 507 past the end of the string table for archive member header at offset 94)