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Diffstat (limited to 'gcc/testsuite/g++.dg/conversion/dr195.C')
-rw-r--r-- | gcc/testsuite/g++.dg/conversion/dr195.C | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/conversion/dr195.C b/gcc/testsuite/g++.dg/conversion/dr195.C new file mode 100644 index 000000000..8502c1578 --- /dev/null +++ b/gcc/testsuite/g++.dg/conversion/dr195.C @@ -0,0 +1,31 @@ +// Copyright (C) 2004 Free Software Foundation, Inc. +// Contributed by Nathan Sidwell 20 Oct 2004 <nathan@codesourcery.com> + +// DR 195 will allow conversions between function and object pointers +// under some circumstances. It is in drafting, so we don't implement +// it (yet). + +// This checks we warn when being pedantic. + +typedef void (*PF)(void); +typedef void *PV; +typedef int *PO; + +void foo () +{ + PF pf; + PV pv; + PO po; + + /* the following two will almost definitly be ok with 195. */ + pf = reinterpret_cast <PF>(pv); // { dg-warning "casting between" "" } + pv = reinterpret_cast <PV>(pf); // { dg-warning "casting between" "" } + + /* the following two might or might not be ok with 195. */ + pf = reinterpret_cast <PF>(po); // { dg-warning "casting between" "" } + po = reinterpret_cast <PO>(pf); // { dg-warning "casting between" "" } + + /* These will never be ok, as they are implicit. */ + pv = pf; // { dg-error "invalid conversion" "" } + pf = pv; // { dg-error "invalid conversion" "" } +} |