Add a testcase for PR ld/22751

Since dummy.o must be placed before

-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive

to trigger the bug, this patch adds an optional trailing ld options to
run_ld_link_exec_tests.

	PR ld/22751
	* testsuite/config/default.exp (INT128_CFLAGS): New.
	* testsuite/ld-plugin/lto.exp (INT128_CFLAGS): New.
	Run ld/22751 tests.
	* testsuite/ld-plugin/pr22751.c: New file.
	* testsuite/lib/ld-lib.exp (run_ld_link_exec_tests): Add
	ld trailing options.

2 files changed, 26 insertions, 0 deletions

diff --git a/ld/testsuite/ld-plugin/lto.exp b/ld/testsuite/ld-plugin/lto.exp
index 896f453..7300f48 100644
--- a/ld/testsuite/ld-plugin/lto.exp
+++ b/ld/testsuite/ld-plugin/lto.exp
@@ -29,6 +29,8 @@ if { ![check_plugin_api_available]
     return
 }
 
+global INT128_CFLAGS
+
 global CFLAGS
 global CXXFLAGS
 set saved_CFLAGS "$CFLAGS"
@@ -214,6 +216,9 @@ set lto_link_tests [list \
   [list "Build pr22502b.o" \
    "$plug_opt" "-flto $lto_no_fat" \
    {pr22502b.c}] \
+  [list "Build pr22751.a" \
+   "$plug_opt" "-flto $lto_no_fat $INT128_CFLAGS" \
+   {pr22751.c} {} "pr22751.a"] \
 ]
 
 if { [at_least_gcc_version 4 7] } {
@@ -400,6 +405,10 @@ set lto_run_tests [list \
   [list "Run pr22502" \
    "-O2 -flto tmpdir/pr22502a.o tmpdir/pr22502b.o" "" \
    {dummy.c} "pr20267" "pass.out" "-flto -O2" "c"] \
+  [list "Run pr22751" \
+   "-O2 -flto" "" \
+   {dummy.c} "pr22751" "pass.out" "-flto -O2" "c" "" \
+   "-Wl,--whole-archive tmpdir/pr22751.a -Wl,--no-whole-archive"] \
 ]
 
 if { [at_least_gcc_version 4 7] } {
diff --git a/ld/testsuite/ld-plugin/pr22751.c b/ld/testsuite/ld-plugin/pr22751.c
new file mode 100644
index 0000000..33c1bf3
--- /dev/null
+++ b/ld/testsuite/ld-plugin/pr22751.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+#ifdef HAS_INT128
+volatile __int128 a = 42;
+volatile __int128 b = 1;
+#else
+volatile long long a = 42;
+volatile long long b = 1;
+#endif
+
+int
+main (void)
+{
+  if (((int) (a / b)) == 42)
+    printf ("PASS\n");
+  return 0;
+}