Merge pull request #6590 from tautschnig/link-library-functions

Permit initializers in library functions

Author: tautschnig

regression/cbmc-concurrency/thread_chain_cbmc1/main.c

@@ -18,7 +18,7 @@
 typedef unsigned long thread_id_t;
 
 // Internal unbounded array indexed by local thread identifiers
-extern __CPROVER_bool __CPROVER_threads_exited[];
+__CPROVER_bool __CPROVER_threads_exited[__CPROVER_constant_infinity_uint];
 
 // A thread_chain is like a chain of threads `f, g, ...` where `f`
 // must terminate before `g` can start to run, and so forth.

regression/cbmc-concurrency/thread_chain_cbmc2/main.c

@@ -18,7 +18,7 @@
 typedef unsigned long thread_id_t;
 
 // Internal unbounded array indexed by local thread identifiers
-extern __CPROVER_bool __CPROVER_threads_exited[];
+__CPROVER_bool __CPROVER_threads_exited[__CPROVER_constant_infinity_uint];
 
 // A thread_chain is like a chain of threads `f, g, ...` where `f`
 // must terminate before `g` can start to run, and so forth.

regression/cbmc-library/__atomic_always_lock_free-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+_Bool __atomic_always_lock_free(__CPROVER_size_t, void *);
+#endif
+
 int main()
 {
   assert(__atomic_always_lock_free(sizeof(int), 0));

regression/cbmc-library/__atomic_clear-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+void __atomic_clear(_Bool *, int);
+#endif
+
 int main()
 {
   _Bool n;

regression/cbmc-library/__atomic_is_lock_free-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+_Bool __atomic_is_lock_free(__CPROVER_size_t, void *);
+#endif
+
 int main()
 {
   assert(__atomic_is_lock_free(sizeof(int), 0));

regression/cbmc-library/__atomic_signal_fence-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+void __atomic_signal_fence(int);
+#endif
+
 int main()
 {
   __atomic_signal_fence(0);

regression/cbmc-library/__atomic_test_and_set-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+_Bool __atomic_test_and_set(void *, int);
+#endif
+
 int main()
 {
   char c = 0;

regression/cbmc-library/__atomic_thread_fence-01/main.c

@@ -1,5 +1,9 @@
 #include <assert.h>
 
+#ifndef __GNUC__
+void __atomic_thread_fence(int);
+#endif
+
 int main()
 {
   __atomic_thread_fence(0);

regression/cbmc-library/__errno_location-01/main.c

@@ -1,9 +1,9 @@
 #include <assert.h>
 #include <errno.h>
 
-int main()
+int main(int arc, char *argv[])
 {
-  __errno_location();
-  assert(0);
+  // errno expands to use of __errno_location() with glibc
+  assert(errno == 0);
   return 0;
 }

regression/cbmc-library/__errno_location-01/test.desc

@@ -1,4 +1,4 @@
-KNOWNBUG
+CORE
 main.c
 --pointer-check --bounds-check
 ^EXIT=0$