[PATCH] ld: testsuite: Fix test cases in ld-unique/unique.exp.

These tests fail on H8, as shown in the log below, for two reasons:
  1. Unexpected assembler diagnostics (see also https://sourceware.org/pipermail/binutils/2026-August/150723.html).
  2. An undefined reference to main: unique.s defines main, whereas the C
  startup code expects _main.

This patch fixes both issues.

/J.D.


[...]
Running /mnt/Works/binutils/ld/testsuite/ld-unique/unique.exp ...
FAIL: Could not create a non-unique object
FAIL: Could not link a unique executable
[...]


Detailed log:
[...]
h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/ -I/mnt/Works/binutils/ld/testsuite/ld-unique -g -O2 -fno-sanitize=all    -c  -c /mnt/Works/binutils/ld/testsuite/ld-unique/unique.s -o tmpdir/unique.o
Executing on host: sh -c {h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/ -I/mnt/Works/binutils/ld/testsuite/ld-unique -g -O2 -fno-sanitize=all    -c  -c /mnt/Works/binutils/ld/testsuite/ld-unique/unique.s -o tmpdir/unique.o 2>&1}  /dev/null ld.tmp (timeout = 300)
spawn [open ...]
h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/ -I/mnt/Works/binutils/ld/testsuite/ld-unique -g -O2 -fno-sanitize=all    -c  -c /mnt/Works/binutils/ld/testsuite/ld-unique/unique_empty.s -o tmpdir/unique_empty.o
Executing on host: sh -c {h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/ -I/mnt/Works/binutils/ld/testsuite/ld-unique -g -O2 -fno-sanitize=all    -c  -c /mnt/Works/binutils/ld/testsuite/ld-unique/unique_empty.s -o tmpdir/unique_empty.o 2>&1}  /dev/null ld.tmp (timeout = 300)
spawn [open ...]
/mnt/Works/binutils/ld/testsuite/ld-unique/unique_empty.s: Assembler messages:
/mnt/Works/binutils/ld/testsuite/ld-unique/unique_empty.s:6: Warning: new section '.note.GNU-stack' defined without attributes - this might cause problems
/mnt/Works/binutils/ld/testsuite/ld-unique/unique_empty.s:6: Warning: new section '.note.GNU-stack' defined without attributes - this might cause problems

FAIL: Could not create a non-unique object
h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/  -no-pie  -L/usr/local/h8300-elf/lib      -L/mnt/Works/xcomp/build-binutils-h8300-linux/ld -o tmpdir/unique_prog tmpdir/unique.o
Executing on host: sh -c {h8300-elf-cc  -B/mnt/Works/xcomp/build-binutils-h8300-linux/ld/tmpdir/ld/  -no-pie  -L/usr/local/h8300-elf/lib      -L/mnt/Works/xcomp/build-binutils-h8300-linux/ld -o tmpdir/unique_prog tmpdir/unique.o 2>&1}  /dev/null ld.tmp (timeout = 300)
spawn [open ...]
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: warning: /mnt/Works/xcomp/sysroot-linux/bin/../lib/gcc/h8300-elf/17.0.0/crtn.o: missing .note.GNU-stack section implies executable stack
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: /mnt/Works/xcomp/sysroot-linux/bin/../lib/gcc/h8300-elf/17.0.0/../../../../h8300-elf/lib/crt0.o: in function `start':
(.text+0x29): undefined reference to `main'
collect2: error: ld returned 1 exit status
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: warning: /mnt/Works/xcomp/sysroot-linux/bin/../lib/gcc/h8300-elf/17.0.0/crtn.o: missing .note.GNU-stack section implies executable stack
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
/mnt/Works/xcomp/sysroot-linux/h8300-elf/bin/ld: /mnt/Works/xcomp/sysroot-linux/bin/../lib/gcc/h8300-elf/17.0.0/../../../../h8300-elf/lib/crt0.o: in function `start':
(.text+0x29): undefined reference to `main'
collect2: error: ld returned 1 exit status

FAIL: Could not link a unique executable
[...]

Signed-off-by: Jan Dubiec <[email protected]>
---
 ld/testsuite/ld-unique/unique.s        | 5 +++--
 ld/testsuite/ld-unique/unique_empty.s  | 2 +-
 ld/testsuite/ld-unique/unique_shared.s | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/ld/testsuite/ld-unique/unique.s b/ld/testsuite/ld-unique/unique.s
index 2ad41c25201..cfaf94f0aeb 100644
--- a/ld/testsuite/ld-unique/unique.s
+++ b/ld/testsuite/ld-unique/unique.s
@@ -3,9 +3,10 @@ a_val:	.long 0
 	.size a_val, .-a_val
 
         .type main,"function"
-        .global main
+        .global main, _main
 main:
+_main:
         .long 0
 
-	.section	.note.GNU-stack,""
+	.section	.note.GNU-stack, ""
 
diff --git a/ld/testsuite/ld-unique/unique_empty.s b/ld/testsuite/ld-unique/unique_empty.s
index 71d5b862498..c7b2778defa 100644
--- a/ld/testsuite/ld-unique/unique_empty.s
+++ b/ld/testsuite/ld-unique/unique_empty.s
@@ -3,4 +3,4 @@
 main:
 	.dc.a b_val
 
-	.section	.note.GNU-stack
+	.section	.note.GNU-stack, ""
diff --git a/ld/testsuite/ld-unique/unique_shared.s b/ld/testsuite/ld-unique/unique_shared.s
index 359b13eb809..0a7f7d34368 100644
--- a/ld/testsuite/ld-unique/unique_shared.s
+++ b/ld/testsuite/ld-unique/unique_shared.s
@@ -1,4 +1,4 @@
 	.type b_val, %gnu_unique_object
 b_val:	.long 0
 	.size b_val, .-b_val
-	.section	.note.GNU-stack
+	.section	.note.GNU-stack, ""
-- 
2.55.0