[clang][bytecode][NFC] Add failing memmove testcase #126682
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Reduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
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@llvm/pr-subscribers-clang Author: Timm Baeder (tbaederr) ChangesReduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp Full diff: https://github.com/llvm/llvm-project/pull/126682.diff 1 Files Affected:
diff --git a/clang/test/AST/ByteCode/builtin-functions.cpp b/clang/test/AST/ByteCode/builtin-functions.cpp
index 7034e8c56bd6204..d51b039d400434e 100644
--- a/clang/test/AST/ByteCode/builtin-functions.cpp
+++ b/clang/test/AST/ByteCode/builtin-functions.cpp
@@ -1272,6 +1272,22 @@ namespace BuiltinMemcpy {
return arr[0] * 1000 + arr[1] * 100 + arr[2] * 10 + arr[3];
}
static_assert(test_incomplete_array_type() == 1234); // both-error {{constant}} both-note {{in call}}
+
+
+ /// FIXME: memmove needs to support overlapping memory regions.
+ constexpr bool memmoveOverlapping() {
+ char s1[] {1, 2, 3};
+ __builtin_memmove(s1, s1 + 1, 2 * sizeof(char));
+ // Now: 2, 3, 3
+ bool Result1 = (s1[0] == 2 && s1[1] == 3 && s1[2]== 3);
+
+ __builtin_memmove(s1 + 1, s1, 2 * sizeof(char));
+ // Now: 2, 2, 3
+ bool Result2 = (s1[0] == 2 && s1[1] == 2 && s1[2]== 3);
+
+ return Result1 && Result2;
+ }
+ static_assert(memmoveOverlapping()); // expected-error {{failed}}
}
namespace Memcmp {
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/30/builds/15560 Here is the relevant piece of the build log for the reference |
Icohedron
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Feb 11, 2025
Reduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
joaosaffran
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Feb 14, 2025
Reduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
sivan-shani
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Feb 24, 2025
Reduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
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Reduced from libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp