Port to stricter C99 platforms.

Especially, C99 prohibits nesting a struct X inside struct Y if
struct X has a flexible array member.
Also, merge from gnulib, incorporating:
2013-11-03 intprops: port to Oracle Studio c99
* lib/intprops.h: Update from gnulib.
* src/alloc.c (struct sdata): New type.
(sdata): Implement in terms of struct sdata.
Remove u member; all uses replaced by next_vector, set_next_vector.
(SDATA_SELECTOR, SDATA_DATA, SDATA_DATA_OFFSET): Adjust to sdata change.
(SDATA_DATA_OFFSET): Now a constant, not a macro.
(struct sblock): Rename first_data member to data, which is now
a flexible array member.  All uses changed.
(next_vector, set_next_vector, large_vector_vec): New functions.
(vector_alignment): New constant.
(roundup_size): Make it a multiple of ALIGNOF_STRUCT_LISP_VECTOR, too.
(struct large-vector): Now merely a NEXT member, since the old approach
ran afoul of stricter C99.  All uses changed to use
large_vector_vec or large_vector_offset.
(large_vector_offset): New constant.
* src/dispnew.c: Include tparam.h, for tgetent.
Do not include term.h; no longer needed.
* src/gnutls.c (Fgnutls_boot): Don't continue after calling a _Noreturn.
* src/lisp.h (ENUM_BF) [__SUNPRO_C && __STDC__]: Use unsigned int.
(struct Lisp_Vector): Use a flexible array member for contents,
instead of a union with a member that is an array of size 1.
All uses changed.
(ALIGNOF_STRUCT_LISP_VECTOR): New constant, to make up for the
fact that the struct no longer contains a union.
(struct Lisp_Misc_Any, struct Lisp_Marker, struct Lisp_Overlay)
(struct Lisp_Save_Value, struct Lisp_Free):
Use unsigned, not int, for spacers, to avoid c99 warning.
(union specbinding): Use unsigned, not bool, for bitfield, as
bool is not portable to pre-C99 hosts.

1 files changed, 34 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 4815cf3f0f5..1c56a7c5996 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,37 @@
+2013-11-04  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Port to stricter C99 platforms.
+        Especially, C99 prohibits nesting a struct X inside struct Y if
+        struct X has a flexible array member.
+        * alloc.c (struct sdata): New type.
+        (sdata): Implement in terms of struct sdata.
+        Remove u member; all uses replaced by next_vector, set_next_vector.
+        (SDATA_SELECTOR, SDATA_DATA, SDATA_DATA_OFFSET): Adjust to sdata change.
+        (SDATA_DATA_OFFSET): Now a constant, not a macro.
+        (struct sblock): Rename first_data member to data, which is now
+        a flexible array member.  All uses changed.
+        (next_vector, set_next_vector, large_vector_vec): New functions.
+        (vector_alignment): New constant.
+        (roundup_size): Make it a multiple of ALIGNOF_STRUCT_LISP_VECTOR, too.
+        (struct large-vector): Now merely a NEXT member, since the old approach
+        ran afoul of stricter C99.  All uses changed to use
+        large_vector_vec or large_vector_offset.
+        (large_vector_offset): New constant.
+        * dispnew.c: Include tparam.h, for tgetent.
+        Do not include term.h; no longer needed.
+        * gnutls.c (Fgnutls_boot): Don't continue after calling a _Noreturn.
+        * lisp.h (ENUM_BF) [__SUNPRO_C && __STDC__]: Use unsigned int.
+        (struct Lisp_Vector): Use a flexible array member for contents,
+        instead of a union with a member that is an array of size 1.
+        All uses changed.
+        (ALIGNOF_STRUCT_LISP_VECTOR): New constant, to make up for the
+        fact that the struct no longer contains a union.
+        (struct Lisp_Misc_Any, struct Lisp_Marker, struct Lisp_Overlay)
+        (struct Lisp_Save_Value, struct Lisp_Free):
+        Use unsigned, not int, for spacers, to avoid c99 warning.
+        (union specbinding): Use unsigned, not bool, for bitfield, as
+        bool is not portable to pre-C99 hosts.
+
 2013-11-04  Glenn Morris  <rgm@gnu.org>
 
         * emacs.c (usage_message): Mention that `-L :...' appends.