patch 7.4.1073
Problem:    Alloc_id depends on numbers, may use the same one twice.  It's not
            clear from the number what it's for.
Solution:   Use an enum.  Add a function to lookup the enum value from the
            name.
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index fb05b7d..b9f3f7b 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -278,35 +278,35 @@
 endfunction
 
 function Test_nomem()
-  call alloc_fail(1, 0, 0)
+  call alloc_fail(GetAllocId('qf_dirname_start'), 0, 0)
   try
     vimgrep vim runtest.vim
   catch
     call assert_true(v:exception =~ 'E342')
   endtry
 
-  call alloc_fail(2, 0, 0)
+  call alloc_fail(GetAllocId('qf_dirname_now'), 0, 0)
   try
     vimgrep vim runtest.vim
   catch
     call assert_true(v:exception =~ 'E342')
   endtry
 
-  call alloc_fail(3, 0, 0)
+  call alloc_fail(GetAllocId('qf_namebuf'), 0, 0)
   try
     cfile runtest.vim
   catch
     call assert_true(v:exception =~ 'E342')
   endtry
 
-  call alloc_fail(4, 0, 0)
+  call alloc_fail(GetAllocId('qf_errmsg'), 0, 0)
   try
     cfile runtest.vim
   catch
     call assert_true(v:exception =~ 'E342')
   endtry
 
-  call alloc_fail(5, 0, 0)
+  call alloc_fail(GetAllocId('qf_pattern'), 0, 0)
   try
     cfile runtest.vim
   catch