IBF: Avoid unaligned load on 32 bit platforms

[Bug #21569]

1 files changed, 4 insertions, 2 deletions

diff --git a/compile.c b/compile.c
index d3b9704cc9..bb7f974b6b 100644
--- a/compile.c
+++ b/compile.c
@@ -14097,8 +14097,10 @@ ibf_dump_object_float(struct ibf_dump *dump, VALUE obj)
 static VALUE
 ibf_load_object_float(const struct ibf_load *load, const struct ibf_object_header *header, ibf_offset_t offset)
 {
-    const double *dblp = IBF_OBJBODY(double, offset);
-    return DBL2NUM(*dblp);
+    double d;
+    /* Avoid unaligned VFP load on ARMv7; IBF payload may be unaligned (C99 6.3.2.3 p7). */
+    memcpy(&d, IBF_OBJBODY(double, offset), sizeof(d));
+    return DBL2NUM(d);
 }
 
 static void