Fix build failure with Xcode/AppleClang 17 (#7699)

Addresses the issue reported in #7606 "Cannot build on MacOS".

A header included from LLVM includes a reference to `std::iterator`
which is deprecated in C++17; this trips a `deprecated-declarations`
warning which becomes a compile error via `-Werror`. This patch
selectively causes that warning to be ignored.

Fixes #7606.

Author: aiusepsi

src/wasm/wasm-debug.cpp

@@ -18,7 +18,22 @@
 #include "wasm.h"
 
 #ifdef BUILD_LLVM_DWARF
+
+#ifdef __clang__
+// DWARFEmitter.h transitively includes llvm/ADT/iterator.h, which uses
+// std::iterator, which is deprecated in C++17. This can trigger a deprecation
+// warning which if -Werror is enabled can cause the build to fail. That warning
+// is suppressed while including DWARFEmitter.h to allow the build to succeed.
+#pragma clang diagnostic push
+#pragma clang diagnostic warning "-Wdeprecated-declarations"
+#endif
+
 #include "llvm/ObjectYAML/DWARFEmitter.h"
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 #include "llvm/ObjectYAML/DWARFYAML.h"
 #include "llvm/include/llvm/DebugInfo/DWARFContext.h"