[gcc r17-2370] testsuite: Fix unstable duplicate test names in pr111527.exp [PR111527]

https://gcc.gnu.org/g:f92e603f22924348b005d2acdebfda8a2c159773

commit r17-2370-gf92e603f22924348b005d2acdebfda8a2c159773
Author: Sunil Dora <[email protected]>
Date:   Mon Jul 13 15:19:48 2026 -0600

    testsuite: Fix unstable duplicate test names in pr111527.exp [PR111527]
    
    pr111527.exp does not call runtest_file_p, so with parallel make
    check more than one runtest instance can run it and the number of
    duplicate test names varies from run to run.  Take the
    gcc_parallel_test_run_p lock like linkage.exp does so the tests
    run only once.
    
    gcc/testsuite/ChangeLog:
    
            PR driver/111527
            * gcc.misc-tests/pr111527.exp: Serialize with
            gcc_parallel_test_run_p to avoid duplicate test names.
    
    Signed-off-by: Sunil Dora <[email protected]>

Diff:
---
 gcc/testsuite/gcc.misc-tests/pr111527.exp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gcc/testsuite/gcc.misc-tests/pr111527.exp b/gcc/testsuite/gcc.misc-tests/pr111527.exp
index 0e71519483f3..586bdb43ebfc 100644
--- a/gcc/testsuite/gcc.misc-tests/pr111527.exp
+++ b/gcc/testsuite/gcc.misc-tests/pr111527.exp
@@ -24,6 +24,14 @@ if { [is_remote host] } {
     return
 }
 
+# This file doesn't use runtest_file_p, so disable parallelization
+# of this *.exp file.  The first parallel runtest to reach this
+# will run the tests.
+if { ![gcc_parallel_test_run_p pr111527] } {
+    return
+}
+gcc_parallel_test_enable 0
+
 global GCC_UNDER_TEST
 if { ![info exists GCC_UNDER_TEST] } {
     set GCC_UNDER_TEST [find_gcc]
@@ -76,3 +84,5 @@ if { [regexp {COLLECT_GCC_OPTIONS=@[^[:space:]]+} $out] } {
 file delete -force $obj
 file delete -force $rsp
 file delete -force $src
+
+gcc_parallel_test_enable 1