feat: add HEDLEY_ALLOC_SIZE macro

nemequ · Sep 20, 2024 · 82925ae · 82925ae
1 parent 7f6a9ca
commit 82925ae
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diff --git a/NEWS b/NEWS
@@ -2,6 +2,7 @@ Version 16
 ==========
 
 * New macros:
+  * HEDLEY_ALLOC_SIZE
   * HEDLEY_DIAGNOSTIC_DISABLE_EXTRA_SEMI
   * HEDLEY_DIAGNOSTIC_DISABLE_UNSAFE_BUFFER_USAGE
 * Assorted bug fixes and enhancements.

diff --git a/hedley.h b/hedley.h
@@ -1326,6 +1326,12 @@ HEDLEY_DIAGNOSTIC_PUSH
 #endif
 HEDLEY_DIAGNOSTIC_POP
 
+#if HEDLEY_GCC_VERSION_CHECK(4,3,0) || HEDLEY_HAS_ATTRIBUTE(alloc_size)
+#  define HEDLEY_ALLOC_SIZE(...) __alloc_size__((__VA_ARGS__))
+#else
+#  define HEDLEY_ALLOC_SIZE(...)
+#endif
+
 #if defined(HEDLEY_PRINTF_FORMAT)
 #  undef HEDLEY_PRINTF_FORMAT
 #endif

diff --git a/test/Makefile b/test/Makefile
@@ -76,6 +76,7 @@ CXX_OUTPUT_FILE ?= --output=
 NULL =
 
 TESTS = \
+	alloc-size \
 	array-param \
 	assume \
 	cast \