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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<div class='path'>path: <a href='/guix/log/?id=bc9b77f0b042bc42bc97df44c00bc45bfe5e004f'>root</a>/<a href='/guix/log/tests?id=bc9b77f0b042bc42bc97df44c00bc45bfe5e004f'>tests</a>/<a href='/guix/log/tests/uuid.scm?id=bc9b77f0b042bc42bc97df44c00bc45bfe5e004f'>uuid.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/uuid.scm?id=bc9b77f0b042bc42bc97df44c00bc45bfe5e004f&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-05-07 12:18:44 +0200'>2019-05-07</span></td><td><a href='/guix/commit/tests/uuid.scm?id=6c5790a2faf8ffc401e43b13425a707394e40874'>uuid: 'fat-uuid-&gt;string' preserves leading zeros.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/35582&gt;.
Reported by sirgazil &lt;sirgazil@zoho.com&gt;.

Previously, leading zeros would be removed, leading to an "invalid"
UUID:

  (uuid-&gt;string (uuid "00CA-050E" 'fat32))
  ⇒ "CA-50E"
  (string-&gt;uuid "CA-50E" 'fat32)
  ⇒ #f

* gnu/system/uuid.scm (fat-uuid-&gt;string): Pad digits with zeros.
* tests/uuid.scm ("uuid, FAT32, leading zeros preserved"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-05-19 00:14:52 +0200'>2018-05-19</span></td><td><a href='/guix/commit/tests/uuid.scm?id=263c9941a1e523b360ca9f42d1ed6b11e6e6e285'>uuid: 'uuid' returns #f when 'string-&gt;uuid' returns #f.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/uuid.scm (uuid): When STR is not a literal, return #f when
'string-&gt;uuid' returns #f.
* tests/uuid.scm ("uuid, dynamic value"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-10-06 14:16:23 +0200'>2017-10-06</span></td><td><a href='/guix/commit/tests/uuid.scm?id=0b12324284f3fbf378d363070f91b794058ae570'>uuid: Fix typo in 'uuid=?' test.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/uuid.scm ("uuid=?"): Change to 'test-assert'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-10-05 12:09:17 +0200'>2017-10-05</span></td><td><a href='/guix/commit/tests/uuid.scm?id=aed1f1b049f6e7ef9f2f2db58bdca6cd3effe94b'>uuid: Add 'uuid=?' and use it.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/uuid.scm (uuid=?): New procedure.
* tests/uuid.scm ("uuid=?"): New test.
* gnu/build/file-systems.scm (partition-uuid-predicate)
(luks-partition-uuid-predicate): Use it instead of 'bytevector=?'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-09-22 18:40:57 +0200'>2017-09-22</span></td><td><a href='/guix/commit/tests/uuid.scm?id=8a7d81a5e23c4d59fbabf2550db32d4ba5572e4b'>uuid: Add a parser for FAT32 UUIDs.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/uuid.scm (%fat32-uuid-rx): New variable.
(string-&gt;fat32-uuid): New procedure.
(%uuid-parsers): Add it.
* tests/uuid.scm ("uuid, FAT32, format preserved"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-09-14 00:10:13 +0200'>2017-09-14</span></td><td><a href='/guix/commit/tests/uuid.scm?id=8f3b63b5d73c0b49139c8a20b7576732abfdeeb8'>uuid: Move tests to 'tests/uuid.scm'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/file-systems.scm ("uuid-&gt;string", "string-&gt;uuid")
("uuid", "uuid, syntax error"): Move to...
* tests/uuid.scm: ... here.  New file.
("uuid, ISO-9660, format preserved"): New test.
</span></span></td><td>Ludovic Courtès</td></tr>