[cfe-dev] Question about test show-diag-options.c

John Wiegley jwiegley at gmail.com
Mon Oct 3 23:04:13 PDT 2011

>>>>> Argyrios Kyrtzidis <kyrtzidis at apple.com> writes:

> On Sep 30, 2011, at 1:19 AM, John Wiegley wrote:
>> I am looking at a test, test/Misc/show-diag-options.c, and I see this line:
>> // CATEGORY_ID: {{.*}}: warning: {{[a-z ]+}} [2]
>> Can anyone tell me where this [2] comes from?  I see that it refers to a
>> diag category index of some kind, but I can't figure out from .td files why
>> the category for that particular warning should have an index of "2".

> Check DiagnosticCategories.h, the number is the index in the enum list.

Aha, I think I may have found an invalid ordering expectations in Clang's test
then.  Here is the key difference between my fork and upstream in

--8<---------------cut here---------------start------------->8---
 CATEGORY("", DiagCat_None)
 CATEGORY("Lexical or Preprocessor Issue", DiagCat_Lexical_or_Preprocessor_Issue)
-CATEGORY("Parse Issue", DiagCat_Parse_Issue)
 CATEGORY("Semantic Issue", DiagCat_Semantic_Issue)
+CATEGORY("Parse Issue", DiagCat_Parse_Issue)
 CATEGORY("Automatic Reference Counting Issue", DiagCat_Automatic_Reference_Counting_Issue)
 CATEGORY("Inline Assembly Issue", DiagCat_Inline_Assembly_Issue)
 CATEGORY("Modules Issue", DiagCat_Modules_Issue)
--8<---------------cut here---------------end--------------->8---

The category indices for Parse Issue and Semantic Issue have been flipped.
Any idea what could cause this to happen?  I haven't renamed, added or deleted
any files in include/clang/Basic...

  John Wiegley
  BoostPro Computing, Inc.

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