ifl/lcc: The lcc retargetable ANSI C compiler

LOG

39 строк1 KB

Chris Fraser

3.3 release for second printing.

27 июн 1995, 23:59

27 июн 1995, 23:596becdd2

From lcc 3.2 to 3.3:

Changes:
The driver no longer accepts -C, because not all preprocessors
implement it; use -Wp-C to pass -C to preprocessors that accept -C.

Errors fixed:
Erroneously interpreted x as a typedef in
typedef int x; void f(signed x) {}

Generated the wrong constant when folding a != comparison of two
double constants, eg, i = (4.5 != 5.0), or a conditional with
double and float arms, eg, 1 == 2 ? 5.6 : 3.4F.

Assertion failed on
struct cdata_struct{int*a,b;}c;
void f(int*T){if(c.a[c.b]<(((int*)T[1]-T)));}

Looped when -Wf-a was specified.

Failed to diagnose illegal occurrences of comma expressions in some
constant expressions, eg, static int d = (1,2);

When compiling for the SPARC, the program below caused spillr to
dereference a null pointer:
   f4(int *v) {
      int cB;
      cB = !v[16] & !v[11] & !v[10] & !v[9] & !v[6] & v[5]
      | v[11] & !v[5] | v[10] & v[6]  | v[11] &  v[6]  | v[12] & v[7]
      | v[10] &  v[8] | v[11] & v[8]  | v[12] & !v[9]  | v[10] & v[9]
      | v[11] &  v[9] | v[11] & v[10] | v[12] &  v[10] | v[12];
      return 0;
   }

Generated incorrect x86 code for some structure copies from an address
returned by a function, eg,
main(){struct {int i;} *f(), *p; *p = *f(p);}

Fri Jun  2 11:42:02 EDT 1995