Merge pull request #1991 from wilzbach/fix-17956

Fix Issue 17956 - core.memory unittest failure (possibly glibc 2.26 s… merged-on-behalf-of: Petar Kirov <ZombineDev@users.noreply.github.com>
dlang · Dec 15, 2017 · ff04e96 · ff04e96
2 parents 7734817 + 52d7e94
commit ff04e96
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/core/memory.d b/src/core/memory.d
@@ -891,9 +891,9 @@ void pureFree(void* ptr) @system pure @nogc nothrow
 
     fakePureFree(y);
 
-    // subtract 2 because snn.lib adds 2 unconditionally before passing
-    //  the size to the Windows API
-    void* z = pureMalloc(size_t.max - 2); // won't affect `errno`
+    // Workaround bug in glibc 2.26
+    // See also: https://issues.dlang.org/show_bug.cgi?id=17956
+    void* z = pureMalloc(size_t.max & ~255); // won't affect `errno`
     assert(errno == fakePureErrno()); // errno shouldn't change
     assert(z is null);
 }