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Work around gcc warning about function pointers conversions.

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Work around harmless (at least under POSIX systems where function pointers are
guaranteed to have the same representation as object pointers) but annoying
warnings given by gcc when converting between function and object pointers, e.g.

Source/DOH/fio.c: In function 'DohEncoding':
Source/DOH/fio.c:51: warning: ISO C forbids conversion of function pointer to object pointer type
Source/DOH/fio.c: In function 'encode':
Source/DOH/fio.c:75: warning: ISO C forbids conversion of object pointer to function pointer type
Source/DOH/base.c: In function 'DohCall':
Source/DOH/base.c:952: warning: ISO C forbids conversion of object pointer to function pointer type

Use an extra level of pointer indirection to avoid them.
This commit is contained in:
Vadim Zeitlin 2014-01-10 14:38:54 +01:00
commit 40bf877499
2 changed files with 3 additions and 3 deletions
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2
Source/DOH/base.c
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@ -949,7 +949,7 @@ DOH *DohCall(DOH *func, DOH *args) {
DOH *result;
DOH *(*builtin) (DOH *);
builtin = (DOH *(*)(DOH *)) GetVoid(func, "builtin");
*(void **)(&builtin) = GetVoid(func, "builtin");
if (!builtin)
return 0;
result = (*builtin) (args);

4
Source/DOH/fio.c
View file

@ -48,7 +48,7 @@ static int Writen(DOH *out, void *buffer, int len) {
void DohEncoding(const char *name, DOH *(*fn) (DOH *s)) {
if (!encodings)
encodings = NewHash();
Setattr(encodings, (void *) name, NewVoid((void *) fn, 0));
Setattr(encodings, (void *) name, NewVoid(*(void **)&fn, 0));
}
/* internal function for processing an encoding */
@ -72,7 +72,7 @@ static DOH *encode(char *name, DOH *s) {
s = tmp;
pos = Tell(s);
Seek(s, 0, SEEK_SET);
fn = (DOH *(*)(DOH *)) Data(handle);
*(void **)(&fn) = Data(handle);
ns = (*fn) (s);
assert(pos != -1);
(void)Seek(s, pos, SEEK_SET);