gdi32/tests: Add a test for double-free on repeated calls to Delete[Enh]MetaFile.

Signed-off-by: Daniel Lehman <dlehman@esri.com> Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

gdi32/tests: Add a test for double-free on repeated calls to Delete[Enh]MetaFile.
32341692 · Daniel Lehman · Alexandre Julliard · 808d1818 · 32341692
Commit 32341692 authored Jul 22, 2021 by Daniel Lehman Committed by Alexandre Julliard Jul 22, 2021
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Showing with 14 additions and 2 deletions

metafile.c dlls/gdi32/tests/metafile.c +14 -2

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--- a/dlls/gdi32/tests/metafile.c
+++ b/dlls/gdi32/tests/metafile.c
@@ -3049,7 +3049,13 @@ static void test_metafile_file(void)
        EnumMetaFile(0, metafile, mf_enum_proc, 0);
    }

-    DeleteMetaFile(metafile);
+    ret = DeleteMetaFile(metafile);
+    ok(ret, "Could not delete metafile: %u\n", GetLastError());
+
+    SetLastError(0xdeadbeef);
+    ret = DeleteMetaFile(metafile);
+    ok(!ret, "DeleteMetaFile succeeded\n");
+    ok(GetLastError() == ERROR_INVALID_HANDLE, "GetLastError() = %u\n", GetLastError());

    SetLastError(0xdeadbeef);
    metafile = CloseMetaFile(dc);
@@ -3144,7 +3150,13 @@ static void test_enhmetafile_file(void)
        dump_emf_records(metafile, "emf_Bezier");
    }

-    DeleteEnhMetaFile(metafile);
+    ret = DeleteEnhMetaFile(metafile);
+    ok(ret, "Could not delete emf: %u\n", GetLastError());
+
+    SetLastError(0xdeadbeef);
+    ret = DeleteEnhMetaFile(metafile);
+    ok(!ret, "DeleteEnhMetaFile succeeded\n");
+    ok(GetLastError() == ERROR_INVALID_HANDLE, "GetLastError() = %u\n", GetLastError());

    SetLastError(0xdeadbeef);
    metafile = CloseEnhMetaFile(dc);