https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80730
Bug ID: 80730
Summary: bogus initializer element is not computable at load
time converting a string to bool
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC rejects the following initialization of a bool variable with a string
literal but accepts (albeit with a warning) an initialization of a bool
variable with an array. It seems that it should accept both since they're both
address constants.
$ cat t.c && gcc -O2 -S -Wall t.c
extern char a[];
const char *s1 = "";
const char *s2 = a;
_Bool b1 = "";
_Bool b2 = a;
t.c:6:12: error: initializer element is not computable at load time
_Bool b1 = "";
^~
t.c:7:1: warning: the address of ‘a’ will always evaluate as ‘true’ [-Waddress]
_Bool b2 = a;
^~~~~
