------- Comment #10 from tobi at gcc dot gnu dot org 2006-01-10 00:10 -------
(In reply to comment #9)
> We don't get an error message but instead we call _gfortran_internal_malloc
> with a zero value and invoked undefined behavior in malloc.
No. This is specifically guarded against:
69 /* Allocate memory for internal (compiler generated) use. */
70
71 void *
72 internal_malloc_size (size_t size)
73 {
74 if (size == 0)
75 return NULL;
76
77 return get_mem (size);
78 }
79
80 extern void *internal_malloc (GFC_INTEGER_4);
81 export_proto(internal_malloc);
82
83 void *
84 internal_malloc (GFC_INTEGER_4 size)
85 {
86 #ifdef GFC_CHECK_MEMORY
87 /* Under normal circumstances, this is _never_ going to happen! */
88 if (size < 0)
89 runtime_error ("Attempt to allocate a negative amount of memory.");
90
91 #endif
92 return internal_malloc_size ((size_t) size);
93 }
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15335
