Avoid GCC 4.x warning for calling memset with a constant size of zero

pdimov · pdimov · commit 5d8bebb76141 · 2026-02-03T14:37:20.000+02:00
diff --git a/include/boost/circular_buffer/debug.hpp b/include/boost/circular_buffer/debug.hpp
@@ -34,6 +34,10 @@ const int UNINITIALIZED = 0xcc;
 
 template <class T>
 inline void do_fill_uninitialized_memory(T* data, std::size_t size_in_bytes) BOOST_NOEXCEPT {
+#if defined(__GNUC__) && __GNUC__ < 5
+    // Avoid warning for calling memset with a constant size of zero
+    if( size_in_bytes )
+#endif
     std::memset(static_cast<void*>(data), UNINITIALIZED, size_in_bytes);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -34,6 +34,10 @@ const int UNINITIALIZED = 0xcc;`
`34`	`34`
`35`	`35`	`template <class T>`
`36`	`36`	`inline void do_fill_uninitialized_memory(T* data, std::size_t size_in_bytes) BOOST_NOEXCEPT {`
	`37`	`+#if defined(__GNUC__) && __GNUC__ < 5`
	`38`	`+ // Avoid warning for calling memset with a constant size of zero`
	`39`	`+ if( size_in_bytes )`
	`40`	`+#endif`
`37`	`41`	`std::memset(static_cast<void*>(data), UNINITIALIZED, size_in_bytes);`
`38`	`42`	`}`
`39`	`43`