https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65476
Bug ID: 65476
Summary: Long_Float array does not byte swap correctly when set
to Scalar_Storage_Order with High Order First
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: daniel.merrill at psware dot com
CC: ebotcazou at gcc dot gnu.org
Created attachment 35067
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35067&action=edit
code to reproduce the issue.
When an array of Long_Floats is set to a scalar_storage_order of
High_Order_First, only the two 32 bit words that make up the 64 bit value are
swapped with each other but the bytes under those words are not swapped
properly. Attached is a simple program that reproduces the behavior. If you
examine the stored values you could get the right value by performing a byte
swap on the underlying 32 bit value.
