From 6b5553e50fff7ad0835e807fc006c0bcfe1816f7 Mon Sep 17 00:00:00 2001 From: rth Date: Fri, 3 Sep 2004 17:22:40 +0000 Subject: PR c/7054 * defaults.h (TARGET_DEFAULT_PACK_STRUCT): Provide default. * tree.h (initial_max_fld_align): Declare * stor-layout.c (initial_max_fld_align): Define and initialize. (maximum_field_alignment): Initialize to the same value. * common.opt: Add -fpack-struct= variant of switch. * opts.c: Handle -fpack-struct= variant of switch. * c-pragma.c: Change #pragma pack() handling so that it becomes compatible to other compilers: accept individual 'push' argument, make final pop restore (command line) default, correct interaction of push/pop and sole specification of a new alignment (so that the sequence #pragma pack(push) - #pragma pack() becomes identical to #pragma pack(push, ). * doc/extend.texi: New node "Structure-Packing Pragmas" under "Pragmas", describing #pragma pack. * doc/invoke.texi: Document -fpack-struct= variant of switch. * doc/tm.texi: Adjust description for HANDLE_PRAGMA_PACK_PUSH_POP. Document new TARGET_DEFAULT_PACK_STRUCT. testsuite: * gcc.dg/pack-test-2.c: Adjust to permit and check #pragma pack(push). * gcc.dg/c99-flex-array-4.c: Add -fpack-struct=8 to provide a deterministic starting point for the alignment of structure fields. * gcc.dg/Wpadded.c: Dito. * g++.dg/abi/vbase10.C: Dito. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87037 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/defaults.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/defaults.h') diff --git a/gcc/defaults.h b/gcc/defaults.h index d16adf4ad4a..dd5c21fe2c1 100644 --- a/gcc/defaults.h +++ b/gcc/defaults.h @@ -476,6 +476,10 @@ do { fputs (integer_asm_op (POINTER_SIZE / BITS_PER_UNIT, TRUE), FILE); \ #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY #endif +#ifndef TARGET_DEFAULT_PACK_STRUCT +#define TARGET_DEFAULT_PACK_STRUCT 0 +#endif + /* By default, the C++ compiler will use function addresses in the vtable entries. Setting this nonzero tells the compiler to use function descriptors instead. The value of this macro says how -- cgit v1.2.1