add comment about Apple clang warning

git-svn-id: https://svn.r-project.org/R/trunk@87673 00db46b3-68df-0310-9c12-caf00c1e9a41
r-devel · Feb 2, 2025 · f444e1a · f444e1a
1 parent 76e0146
commit f444e1a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/main/memory.c b/src/main/memory.c
@@ -2357,6 +2357,7 @@ long double *R_allocLD(size_t nelem)
     size_t ld_align = alignof(long double);
 #elif __GNUC__
     // This is C99, but do not rely on it.
+    // Apple clang warns this is gnu extension.
     size_t ld_align = offsetof(struct { char __a; long double __b; }, __b);
 #else
     size_t ld_align = 0x0F; // value of x86_64, known others are 4 or 8