File gdb-testsuite-fix-printf-regexp-for-ppc64le-with-gli.patch of Package gdb

From e536b8c1ae2e0212e86dd741a4fa31b4d09f9dd0 Mon Sep 17 00:00:00 2001
From: Abhay Kandpal <abhay@linux.ibm.com>
Date: Tue, 3 Mar 2026 10:25:09 -0500
Subject: [PATCH 1/2] gdb/testsuite: fix printf regexp for ppc64le with glibc
 ieee128 fix

On ppc64le, when the compiler selects IEEE-128 long double ABI
(-mabi=ieeelongdouble), calls to printf are redirected to
___ieee128_printf.  This causes 'break printf' in GDB to never stop
at printf:
...
(gdb) break printf
Breakpoint 3 at 0x7ffff7a6b880
(gdb) continue
Continuing.
value is 7

[Inferior 1 (process 403664) exited normally]
(gdb) FAIL: gdb.base/annota1.exp: continue to printf
...

glibc fixed this by adding local symbol aliases in the ieee128
compatibility files so that the original symbol names are present in
the symbol table again (glibc commit f05ab7c4a99b).  After the glibc
fix, GDB stops at printf but the breakpoint is reported as
'Breakpoint 3.2, ___ieee128_printf' since printf now resolves to two
locations.  The current GDB test regexps do not match this output.

...
(gdb) break printf
Breakpoint 3 at 0x7ffff7a6b278: printf. (2 locations)
(gdb) continue
Continuing.

Breakpoint 3.2, ___ieee128_printf (format=0x10000970 \"value is %d\n\")
    at ../sysdeps/ieee754/ldbl-128ibm-compat/ieee128-printf.c:28
(gdb) FAIL: gdb.base/annota1.exp: continue to printf
...

This causes failures in gdb.base/annota1.exp and gdb.base/annota3.exp
because the pattern 'Breakpoint 3, ' does not match 'Breakpoint 3.2, '.
Fix this by changing 'Breakpoint 3, ' to 'Breakpoint 3.*, '.

In gdb.server/sysroot.exp the pattern '(__)?printf' does not match
'___ieee128_printf'.
Fix this by changing '(__)?printf' to '.*printf' to match any printf
variant including printf, __printf, and ___ieee128_printf,
following the same approach as previous fixes for __printf on x86_64
(commit f870f78fb2d) and printf@@GLIBC_2.17 on ppc64le (commit
29004660c94).

Tested on ppc64le, x86_64-linux.

Approved-By: Tom de Vries <tdevries@suse.de>
---
 gdb/testsuite/gdb.base/annota1.exp   | 2 +-
 gdb/testsuite/gdb.base/annota3.exp   | 6 +++---
 gdb/testsuite/gdb.server/sysroot.exp | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/gdb/testsuite/gdb.base/annota1.exp b/gdb/testsuite/gdb.base/annota1.exp
index 927e8a7e579..ac8e29333ac 100644
--- a/gdb/testsuite/gdb.base/annota1.exp
+++ b/gdb/testsuite/gdb.base/annota1.exp
@@ -260,7 +260,7 @@ gdb_test_multiple "break printf" "break printf" {
 #
 set pat_begin "\r\n\032\032post-prompt\r\nContinuing.\r\n\r\n\032\032starting\r\n\r\n\032\032frames-invalid\r\n${breakpoints_invalid}\r\n\032\032frames-invalid\r\n"
 set pat_adjust "warning: Breakpoint 3 address previously adjusted from $hex to $hex.\r\n"
-set pat_end "\r\n\032\032breakpoint 3\r\n\r\nBreakpoint 3, \r\n\032\032frame-begin 0 $hex\r\n\r\n(\032\032frame-address\r\n$hex\r\n\032\032frame-address-end\r\n in \r\n)*.*\032\032frame-function-name\r\n.*printf(@.*)?\r\n\032\032frame-args\r\n.*\032\032frame-end\r\n\r\n\032\032stopped\r\n$gdb_prompt$"
+set pat_end "\r\n\032\032breakpoint 3\r\n\r\nBreakpoint 3(\\.$decimal)?, \r\n\032\032frame-begin 0 $hex\r\n\r\n(\032\032frame-address\r\n$hex\r\n\032\032frame-address-end\r\n in \r\n)*.*\032\032frame-function-name\r\n.*printf(@.*)?\r\n\032\032frame-args\r\n.*\032\032frame-end\r\n\r\n\032\032stopped\r\n$gdb_prompt$"
 
 gdb_test_multiple "continue" "continue to printf" {
     -re "${pat_begin}($pat_adjust)?$pat_end" {
diff --git a/gdb/testsuite/gdb.base/annota3.exp b/gdb/testsuite/gdb.base/annota3.exp
index 134a3d37c80..d5bbed735ce 100644
--- a/gdb/testsuite/gdb.base/annota3.exp
+++ b/gdb/testsuite/gdb.base/annota3.exp
@@ -164,15 +164,15 @@ gdb_test -prompt "$gdb_prompt$" "break printf" \
 # get to printf
 #
 send_gdb "continue\n"
-gdb_expect_list "continue to printf" "$gdb_prompt$" {
+gdb_expect_list "continue to printf" "$gdb_prompt$" [subst_vars {
     "\r\n\032\032post-prompt\r\n"
     "Continuing.\r\n"
     "\r\n\032\032starting\r\n"
     "\r\n\032\032breakpoint 3\r\n"
     "\r\n"
-    "Breakpoint 3, \[^\r\n\]*\r\n"
+    "Breakpoint 3(\\.$decimal)?, \[^\r\n\]*\r\n"
     "\r\n\032\032stopped\r\n"
-}
+}]
 
 send_gdb "backtrace\n"
 gdb_expect_list "backtrace from shlibrary" "$gdb_prompt$" {
diff --git a/gdb/testsuite/gdb.server/sysroot.exp b/gdb/testsuite/gdb.server/sysroot.exp
index 7f5597d7306..e4e14b349bf 100644
--- a/gdb/testsuite/gdb.server/sysroot.exp
+++ b/gdb/testsuite/gdb.server/sysroot.exp
@@ -88,7 +88,7 @@ foreach_with_prefix sysroot $modes {
 
 	# Test that we can stop inside a library.
 	gdb_breakpoint printf
-	gdb_test "continue" "Breakpoint $decimal.* (__)?printf.*" \
+	gdb_test "continue" "Breakpoint $decimal.* (__|___ieee128_)?printf.*" \
 	    "continue to printf"
     }
 }

base-commit: fbb1f8cff499031b1c9a7fbc189039e669fb1cf0
-- 
2.51.0