Patch taken from file comparison with openjdk@19.

diff -u -r openjdk-9.alt/hotspot/test/runtime/StackGuardPages/exeinvoke.c openjdk-9/hotspot/test/runtime/StackGuardPages/exeinvoke.c
--- openjdk-9.alt/hotspot/test/runtime/StackGuardPages/exeinvoke.c	2023-04-05 13:46:58.689964892 +0200
+++ openjdk-9/hotspot/test/runtime/StackGuardPages/exeinvoke.c	2023-04-05 14:15:52.435613325 +0200
@@ -67,8 +67,17 @@
   longjmp(context, 1);
 }
 
+static char* altstack = NULL;
+
 void set_signal_handler() {
-  static char altstack[SIGSTKSZ];
+  if (altstack == NULL) {
+    // Dynamically allocated in case SIGSTKSZ is not constant
+    altstack = (char*)malloc(SIGSTKSZ);
+    if (altstack == NULL) {
+      fprintf(stderr, "Test ERROR. Unable to malloc altstack space\n");
+      exit(7);
+    }
+  }
 
   stack_t ss = {
     .ss_size = SIGSTKSZ,
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<tr><td><span title='2023-07-19 10:38:15 -0400'>2023-07-19</span></td><td><a href='/guix/commit/gnu/tests/gdm.scm?id=ab2abe16debaae362ea04f32d66332423d2dba1b'>tests: gdm: Prefer OCR to delay.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/gdm.scm (run-gdm-test): Use wait-for-screen-text instead of sleep.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
Modified-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Bruno Victal</td></tr>
<tr><td><span title='2023-03-21 16:53:28 -0400'>2023-03-21</span></td><td><a href='/guix/commit/gnu/tests/gdm.scm?id=0c53cbcc5686ad54f41e54ca5137352a8e49323b'>tests: gdm: Remove tmpfs related tests.</a><span class='msg-avail'>...<span class='msg-tooltip'>This test never managed to reveal the problem described in [1] because
from gnu/system/vm.scm it is seen that our "/tmp" mount is filtered out and
replaced with a "/tmp" file-system that is mounted with (needed-for-boot? #t).
This last bit is crucial as the problem was caused by the user specified "/tmp"
file-system lacking this part which caused "/tmp" being mounted after
x11-socket-directory-service has run, effectively shadowing the directory.

[1]: &lt;https://issues.guix.gnu.org/57589&gt;

* gnu/tests/gdm.scm (%test-gdm-wayland-tmpfs): Delete variable.
(make-os): Remove tmpfs? argument.
(run-gdm-test): Remove tmpfs? argument. Add a small delay since
waiting for gdm.pid is not enough, causing the tests to fail sporadically.

Reviewed-by: Josselin Poiret &lt;dev@jpoiret.xyz&gt;
Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Bruno Victal</td></tr>
<tr><td><span title='2022-12-04 23:12:36 +0100'>2022-12-04</span></td><td><a href='/guix/commit/gnu/tests/gdm.scm?id=b2a848d23d37f31496e1ff664f1dcf6abcdcc388'>tests: Add gdm tests.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/gdm.scm: New file.
* gnu/local.mk: Register it.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Bruno Victal</td></tr>