[gdb/testsuite] Use -nostdlib in gdb.linespec/explicit.exp
On openSUSE Leap 15.6 ppc64le-linux, with gdb.linespec/explicit.exp I run
into:
...
(gdb) b -source thread_pointer.h FAIL: $exp: complete after -source: tab complete "b -source thr"
Quit^M
...
The test-case already contains a related workaround:
...
# Get rid of symbols from shared libraries, otherwise
# "b -source thr<tab>" could find some system library's
# source.
gdb_test_no_output "nosharedlibrary"
...
but that doesn't work in this case because the debug info is in the executable
itself:
...
The File Name Table (offset 0xb5):
Entry Dir Time Size Name
1 0 0 0 abi-note.c
2 1 0 0 types.h
3 2 0 0 stdint-intn.h
4 2 0 0 stdint-uintn.h
5 3 0 0 elf.h
6 4 0 0 thread_pointer.h
...
due to debug info in some glibc object file.
Fix this by:
- using -nostdlib, ensuring only debug info from the three test-case sources
is present in the executable, and
- adding a _start wrapping main.
Tested on x86_64-linux and ppc64le-linux.
Reviewed-By: Keith Seitz <keiths@redhat.com>
PR testsuite/31229
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31229
diff --git a/gdb/testsuite/gdb.linespec/explicit.c b/gdb/testsuite/gdb.linespec/explicit.c
index 7d23216..957de50 100644
--- a/gdb/testsuite/gdb.linespec/explicit.c
+++ b/gdb/testsuite/gdb.linespec/explicit.c
@@ -69,3 +69,9 @@ main (void)
return myfunction2 (j);
}
+
+void
+_start (void)
+{
+ main ();
+}
diff --git a/gdb/testsuite/gdb.linespec/explicit.exp b/gdb/testsuite/gdb.linespec/explicit.exp
index e8ae10a..b257a98 100644
--- a/gdb/testsuite/gdb.linespec/explicit.exp
+++ b/gdb/testsuite/gdb.linespec/explicit.exp
@@ -20,8 +20,13 @@
standard_testfile explicit.c explicit2.c 3explicit.c
set exefile $testfile
+set opts {}
+lappend opts debug
+lappend opts nowarnings
+lappend opts additional_flags=-nostdlib
+
if {[prepare_for_testing "failed to prepare" $exefile \
- [list $srcfile $srcfile2 $srcfile3] {debug nowarnings}]} {
+ [list $srcfile $srcfile2 $srcfile3] $opts]} {
return -1
}
