[SCM] MIG branch, master, updated. v1.4-14-g44753cf

[Justus Winter]

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- Log -----------------------------------------------------------------
commit 44753cf5a30b9324d2c4ac9021843674bde5cc3c
Author: Justus Winter <address@hidden>
Date:   Sun Feb 15 13:29:30 2015 +0100

    Do not generate code dereferencing type-punned pointers
    
    For variable-length arrays, up to 2048 bytes are transmitted inline.
    If the array is larger, the data is transmitted out-of-line, and a
    pointer to a vm_allocated region is stored at the beginning of the
    array.
    
    Previously, the generated code casted the field.  Use a union instead.
    
    This fixes the gcc warning `dereferencing type-punned pointer will
    break strict-aliasing rules [-Wstrict-aliasing]'.
    
    * global.c (OOLPostfix): New variable.
    * global.h (OOLPostfix): New declaration.
    * server.c (WriteServerCallArg): Avoid cast.
    (WriteDestroyArg): Likewise.
    (WritePackArgValue): Likewise.
    (WritePackArg): Likewise.
    * user.c (WriteExtractArgValue): Likewise.
    * utils.c (WriteFieldDeclPrim): Generate a union with an additional
    pointer field for variable-length arrays.

-----------------------------------------------------------------------

Summary of changes:
 global.c |    1 +
 global.h |    1 +
 server.c |   18 +++++++++---------
 user.c   |    9 +++++----
 utils.c  |    8 +++++++-
 5 files changed, 23 insertions(+), 14 deletions(-)


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