Philippe Mathieu-Daudé f7795e4096 misc: Replace zero-length arrays with flexible array member (automatic) ... Description copied from Linux kernel commit from Gustavo A. R. Silva (see [3]): --v-- description start --v-- The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member [1], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being unadvertenly introduced [2] to the Linux codebase from now on. --^-- description end --^-- Do the similar housekeeping in the QEMU codebase (which uses C99 since commit 7be41675f7). All these instances of code were found with the help of the following Coccinelle script: @@ identifier s, m, a; type t, T; @@ struct s { ... t m; - T a[0]; + T a[]; }; @@ identifier s, m, a; type t, T; @@ struct s { ... t m; - T a[0]; + T a[]; } QEMU_PACKED; [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76497732932f [3] https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=17642a2fbd2c1 Inspired-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-03-16 22:07:42 +01:00
..
tcg-gvec-desc.h	tcg: Move TCG headers to include/tcg/	2020-01-15 15:13:10 -10:00
tcg-mo.h	tcg: Move TCG headers to include/tcg/	2020-01-15 15:13:10 -10:00
tcg-op-gvec.h	tcg: Add tcg_gen_gvec_5_ptr	2020-02-12 14:58:36 -08:00
tcg-op.h	tcg: Move TCG headers to include/tcg/	2020-01-15 15:13:10 -10:00
tcg-opc.h	tcg: Move TCG headers to include/tcg/	2020-01-15 15:13:10 -10:00
tcg.h	misc: Replace zero-length arrays with flexible array member (automatic)	2020-03-16 22:07:42 +01:00