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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.dg/] [const-1.c] - Rev 753
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/* { dg-do compile } */ /* { dg-options "-O2 -Wsuggest-attribute=const" } */ extern int extern_const(int a) __attribute__ ((const)); /* Trivial. */ int foo1(int a) /* { dg-bogus "normally" "detect const candidate" } */ { /* { dg-warning "const" "detect const candidate" { target *-*-* } "8" } */ return extern_const (a); } /* Loops known to be normally and extern const calls should be safe. */ int __attribute__ ((noinline)) foo2(int n) /* { dg-bogus "normally" "detect const candidate" } */ { /* { dg-warning "const" "detect const candidate" { target *-*-* } "16" } */ int ret = 0; int i; for (i=0; i<n; i++) ret+=extern_const (i); return ret; } /* No warning here; we can work it by ourselves. */ static int __attribute__ ((noinline)) foo2b(int n) { int ret = 0; int i; for (i=0; i<n; i++) ret+=extern_const (i); return ret; } /* Unbounded loops are not safe. */ static int __attribute__ ((noinline)) foo3(int n) /* { dg-warning "const\[^\n\]* normally" "detect const candidate" } */ { int ret = 0; int i; for (i=0; extern_const (i+n); n++) ret+=extern_const (i); return ret; } int foo4(int n) /* { dg-warning "const\[^\n\]* normally" "detect const candidate" } */ { return foo3(n) + foo2b(n); } int foo5(int n) /* { dg-bogus "normally" "detect const candidate" } */ { /* { dg-warning "const" "detect const candidate" { target *-*-* } "54" } */ return foo2(n); }
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