Initialization of anonymous bit-fields in structs

For anonymous bit-fields in structs, carrier fields may
be introduced which are not initialized since no default
initializer are generated earlier. This cause the translation in
C2C to throw an error since too few initializers are available.

Example:

struct s2 {
		int : 10;
		int a;
		int : 10;
		char b;
		int : 10;
		short c;
		int : 10;
} s2 = { 42, 'a', 43 };

To work around this issue we need to generate a default inializer
for every new member that does not have a translated member.

Based on P#80, with more efficient algorithms.

Bug 23362

1 files changed, 1 insertions, 0 deletions

diff --git a/test/regression/bitfields9.c b/test/regression/bitfields9.c
index 54cc34ab..eef20168 100644
--- a/test/regression/bitfields9.c
+++ b/test/regression/bitfields9.c
@@ -11,6 +11,7 @@ struct t {
   unsigned int c: 16;
   _Bool d: 1;
   short e: 8;
+  int : 10;
 };
 
 union u {