Allow tools to work without compilation database

[Manuel Klimek via cfe-commits]

-    if (!Compilations)
-      llvm::report_fatal_error(ErrorMessage);
+    if (!Compilations) {
+      errs() << "Compilation database not found - using default options\n";
+      int argc = 1;
+      const char *argv[] = {"--"};
+      Compilations.reset(
+          FixedCompilationDatabase::loadFromCommandLine(argc, argv));


Just Compilations.reset(new FixedCompilationDatabase(".",
std::vector<std::string>()))?

On Thu, Dec 3, 2015 at 8:51 AM Russell Wallace via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> Per discussion at
> http://lists.llvm.org/pipermail/cfe-dev/2015-December/046321.html allow
> tools to work in the absence of a compilation database, but warn the user
> about the absence.
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> cfe-commits mailing list
> cfe-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
>
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