Subject: [PATCH] Binutils: Readelf testcase failing with clang

[Potharla, Rupesh]

[Public]

Thanks Jan,

I made the changes you have suggested. Can I go ahead and merge the code changes ?

Patch Inlined:
-----------------

 The latest clang is emitting strx forms for strings earlier it was
 emitting strp form. Due to this change, the readelf test case is failing,
 fixing the regular expression in the test case fixes the issue. Similar
 behavior is seen with addresses.

 Failing testcase:
 FAIL: readelf -wi: missing: .*DW_AT_producer.*(GNU C|indirect string).*

 Latest clang
 ------------
 [1] DW_TAG_compile_unit DW_CHILDREN_yes
        DW_AT_producer  DW_FORM_strx1
        DW_AT_language  DW_FORM_data2

 <0><c>: Abbrev Number: 1 (DW_TAG_compile_unit)
    <d>   DW_AT_producer    : (indexed string: 0x0): AMD clang version 15.0.0
    <e>   DW_AT_language    : 12        (ANSI C99)
    <10>  DW_AT_name        : (indexed string: 0x1): testprog.c

 Old clang and Gcc
 -----------------
 [1] DW_TAG_variable     DW_CHILDREN_no
         DW_AT_name      DW_FORM_strp

 <0><c>: Abbrev Number: 5 (DW_TAG_compile_unit)
    <d>   DW_AT_producer    : (indirect string, offset: 0x18): GNU C17 12.0.0 20211122
    <11>  DW_AT_language    : 29       (C11)
---
 binutils/testsuite/binutils-all/readelf.exp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/binutils/testsuite/binutils-all/readelf.exp b/binutils/testsuite/binutils-all/readelf.exp
index 0f7a1f3b5a0..23cefab41a4 100644
--- a/binutils/testsuite/binutils-all/readelf.exp
+++ b/binutils/testsuite/binutils-all/readelf.exp
@@ -188,12 +188,12 @@ proc readelf_wi_test {} {
 	".*DW_TAG_compile_unit.*"
 	".*DW_TAG_subprogram.*"
 	".*DW_TAG_base_type.*"
-	".*DW_AT_producer.*(GNU C|indirect string).*"
+	".*DW_AT_producer.*(GNU C|indirect string|indexed string).*"
 	".*DW_AT_language.*(ANSI C|C11).*"
-	".*DW_AT_name.*(testprog.c|indirect string).*"
+	".*DW_AT_name.*(testprog.c|indirect string|indexed string).*"
 	".*DW_AT_name.*fn.*"
-	".*DW_AT_name.*(main|indirect string).*"
-	".*\(DW_OP_addr: 0\).*"
+	".*DW_AT_name.*(main|indirect string|indexed string).*"
+	".*(DW_OP_addr: 0|DW_OP_addrx <0>).*"
     }
 
     # The MSP430 in LARGE mode does not generate a DW_OP_addr.
-- 
2.25.1






Regards,
Rupesh P

>-----Original Message-----
>From: Jan Beulich <jbeulich@suse.com>
>Sent: Wednesday, September 14, 2022 12:25 PM
>To: Potharla, Rupesh <Rupesh.Potharla@amd.com>
>Cc: George, Jini Susan <JiniSusan.George@amd.com>; Parasuraman,
>Hariharan <Hariharan.Parasuraman@amd.com>; Kumar N, Bhuvanendra
><Bhuvanendra.KumarN@amd.com>; Nick Clifton <nickc@redhat.com>;
>Potharla, Rupesh via Binutils <binutils@sourceware.org>
>Subject: Re: Subject: [PATCH] Binutils: Readelf testcase failing with clang
>
>Caution: This message originated from an External Source. Use proper caution
>when opening attachments, clicking links, or responding.
>
>
>On 14.09.2022 08:45, Potharla, Rupesh via Binutils wrote:
>> The latest clang is emitting strx forms for strings earlier it was
>> emitting strp form. Due to this change, the readelf test case is
>> failing, fixing the regular expression in the test case fixes the
>> issue. Similar behavior is seen with addresses and fixed that as well.
>
>The adjustments are okay, but please make at least one of title or subject say
>which specific testcase it is that is failing. Feel free to apply with the text
>adjustment.
>
>Jan
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