[binutils-gdb] [gdb/testsuite] Fix gdb.base/catch-syscall.exp with --with-expat=no

[Tom de Vries <vries@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=32412d8e48b156c387383833a97a649fce2f05a1

commit 32412d8e48b156c387383833a97a649fce2f05a1
Author: Tom de Vries <tdevries@suse.de>
Date:   Wed May 11 15:48:23 2022 +0200

    [gdb/testsuite] Fix gdb.base/catch-syscall.exp with --with-expat=no
    
    When doing a gdb build with --with-expat=no, I run into:
    ...
    (gdb) PASS: gdb.base/catch-syscall.exp: determine pipe syscall: \
      continue to breakpoint: before pipe call
    catch syscall pipe^M
    Unknown syscall name 'pipe'.^M
    (gdb) PASS: gdb.base/catch-syscall.exp: determine pipe syscall: \
      catch syscall pipe
    catch syscall pipe2^M
    Unknown syscall name 'pipe2'.^M
    (gdb) PASS: gdb.base/catch-syscall.exp: determine pipe syscall: \
      catch syscall pipe2
    continue^M
    Continuing.^M
    [Detaching after vfork from child process 18538]^M
    [Inferior 1 (process 18537) exited normally]^M
    (gdb) FAIL: gdb.base/catch-syscall.exp: determine pipe syscall: continue
    ...
    
    This is a regression since recent commit 5463a15c18b ("[gdb/testsuite] Handle
    pipe2 syscall in gdb.base/catch-syscall.exp").
    
    Fix this by using pipe/pipe2 syscall numbers instead.
    
    Tested on x86_64-linux.

Diff:
---
 gdb/testsuite/gdb.base/catch-syscall.exp | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/gdb/testsuite/gdb.base/catch-syscall.exp b/gdb/testsuite/gdb.base/catch-syscall.exp
index 1260a64270f..d8b6898b3e0 100644
--- a/gdb/testsuite/gdb.base/catch-syscall.exp
+++ b/gdb/testsuite/gdb.base/catch-syscall.exp
@@ -705,10 +705,12 @@ proc setup_all_syscalls {} {
     # SYS_pipe doesn't exist on aarch64 kernel.
     set test "check SYS_pipe"
     set have_SYS_pipe 0
+    set SYS_pipe -1
     gdb_test_multiple "p pipe_syscall" $test {
-	-re -wrap " = $decimal" {
+	-re -wrap " = ($decimal)" {
 	    pass $test
 	    set have_SYS_pipe 1
+	    set SYS_pipe $expect_out(1,string)
 	}
 	-re -wrap "No symbol .*" {
 	    pass $test
@@ -717,10 +719,12 @@ proc setup_all_syscalls {} {
 
     set test "check SYS_pipe2"
     set have_SYS_pipe2 0
+    set SYS_pipe2 -1
     gdb_test_multiple "p pipe2_syscall" $test {
-	-re -wrap " = $decimal" {
+	-re -wrap " = ($decimal)" {
 	    pass $test
 	    set have_SYS_pipe2 1
+	    set SYS_pipe2 $expect_out(1,string)
 	}
 	-re -wrap "No symbol .*" {
 	    pass $test
@@ -736,19 +740,19 @@ proc setup_all_syscalls {} {
 	gdb_test "break $line"
 	gdb_continue_to_breakpoint "before pipe call"
 	if { $have_SYS_pipe } {
-	    gdb_test "catch syscall pipe"
+	    gdb_test "catch syscall $SYS_pipe"
 	}
 	if { $have_SYS_pipe2 } {
-	    gdb_test "catch syscall pipe2"
+	    gdb_test "catch syscall $SYS_pipe2"
 	}
 	set ok 0
 	gdb_test_multiple "continue" "" {
-	    -re -wrap "Catchpoint $decimal \\(call to syscall pipe\\).*" {
+	    -re -wrap "Catchpoint $decimal \\(call to syscall (pipe|$SYS_pipe)\\).*" {
 		lappend all_syscalls pipe
 		pass $gdb_test_name
 		set ok 1
 	    }
-	    -re -wrap "Catchpoint $decimal \\(call to syscall pipe2\\).*" {
+	    -re -wrap "Catchpoint $decimal \\(call to syscall (pipe2|$SYS_pipe)\\).*" {
 		lappend all_syscalls pipe2
 		pass $gdb_test_name
 		set ok 1