lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/mlibc/options/internal/gcc-extra/cxxabi.cpp b/lib/mlibc/options/internal/gcc-extra/cxxabi.cpp
new file mode 100644
index 0000000..c5bd92f
--- /dev/null
+++ b/lib/mlibc/options/internal/gcc-extra/cxxabi.cpp
@@ -0,0 +1,20 @@
+
+#include <bits/ensure.h>
+
+// The cxxabi needs operator delete for *deleting* destructors, i.e., destructors that
+// are called by delete expressions. We never use such expressions in mlibc.
+// Note that G++ complains if we make the operator hidden,
+// thus we use it's mangled name as a workaround.
+#if defined(__clang__)
+	extern "C" [[gnu::visibility("hidden")]] void _ZdlPv() { // operator delete (void *, size_t)
+		__ensure(!"operator delete called! delete expressions cannot be used in mlibc.");
+	}
+#else
+	extern "C" [[gnu::visibility("hidden")]] void _ZdlPvj() { // operator delete (void *, unsigned int)
+		__ensure(!"operator delete called! delete expressions cannot be used in mlibc.");
+	}
+
+	extern "C" [[gnu::visibility("hidden")]] void _ZdlPvm() { // operator delete (void *, size_t)
+		__ensure(!"operator delete called! delete expressions cannot be used in mlibc.");
+	}
+#endif
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