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Fri, 14 Aug 2026 12:38:38 +0000 Message-ID: <8728955b-d549-4776-9399-0d695b39c346@suse.de> Date: Fri, 14 Aug 2026 14:38:38 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] [gdb/testsuite] Fix _selftest_setup on ppc64le-linux From: Tom de Vries To: gdb-patches@sourceware.org References: <20260729131224.3114252-1-tdevries@suse.de> Content-Language: en-US In-Reply-To: <20260729131224.3114252-1-tdevries@suse.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; PREVIOUSLY_DELIVERED(0.00)[gdb-patches@sourceware.org]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid, sourceware.org:url, imap1.dmz-prg2.suse.org:helo] X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org On 7/29/26 3:12 PM, Tom de Vries wrote: > On ppc64le-linux, with gcc 7.5.0 and an O0 gdb build, I get: > ... > (gdb) run ... > ... > Breakpoint 1, main (argc=12, argv=0x7fffffffea78) at .../gdb.c:30^M > 30 gdb_assert (is_main_thread ());^M > (gdb) PASS: gdb.gdb/python-helper.exp: run until breakpoint at main > ... > > But with an O2 gdb build, I run into: > ... > (gdb) run ... > ... > Breakpoint 1, 0x000000001003b438 in main (argc=12, argv=0x7fffffffea78) at \ > /space/vries/gdb/src/gdb/gdb.c:25 > 25 { > (gdb) FAIL: gdb.gdb/python-helper.exp: run until breakpoint at main > ... > > The breakpoint is indeed set at address 0x1003b438: > ... > (gdb) break main^M > Breakpoint 1 at 0x1003b438: file /space/vries/gdb/src/gdb/gdb.c, line 25.^M > ... > which is the local entry point: > ... > (gdb) disassemble main > Dump of assembler code for function main(int, char**): > 0x000000001003b430 <+0>: lis r2,4606 > 0x000000001003b434 <+4>: addi r2,r2,28416 > 0x000000001003b438 <+8>: mflr r0 > ... > > And indeed, at that address, there's no "recommended breakpoint location": > ... > gdb.c: > File name Line number Starting address View Stmt > gdb.c 25 0x1003b430 x > gdb.c 30 0x1003b454 x > gdb.c 37 0x1003b464 x > ... > > So gdb behaves as expected. > > Fix this by updating the pass regexp to allow this type of gdb output. > > This fixes both test-case gdb.gdb/python-helper.exp and gdb.gdb/selftest.exp. > I've pushed this to trunk, then reproduced the same problem on gdb-18-branch, and applied the patch there. Thanks, - Tom > Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34463 > --- > gdb/testsuite/lib/selftest-support.exp | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/gdb/testsuite/lib/selftest-support.exp b/gdb/testsuite/lib/selftest-support.exp > index 8d402288c51..bcfa99e8f34 100644 > --- a/gdb/testsuite/lib/selftest-support.exp > +++ b/gdb/testsuite/lib/selftest-support.exp > @@ -163,7 +163,8 @@ proc _selftest_setup { } { > [multi_line \ > "Starting program: $re_hs" \ > ".*" \ > - [string cat "Breakpoint $::decimal, $function $re_args at" \ > + [string cat \ > + "Breakpoint $::decimal,( $::hex in)? $function $re_args at" \ > " ${re_hs}gdb.c:$re_hs"] \ > ".*"] > set re_xfail \ > > base-commit: 46a7f5580ebb8c6e0712ff83fbdfba658944ea01