diff options
Diffstat (limited to 'gcc/testsuite/g++.old-deja/g++.other/warn4.C')
-rw-r--r-- | gcc/testsuite/g++.old-deja/g++.other/warn4.C | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.other/warn4.C b/gcc/testsuite/g++.old-deja/g++.other/warn4.C new file mode 100644 index 000000000..7973c75d0 --- /dev/null +++ b/gcc/testsuite/g++.old-deja/g++.other/warn4.C @@ -0,0 +1,68 @@ +// { dg-do assemble } +// { dg-options "-Wsign-conversion" } + +// Copyright (C) 1999 Free Software Foundation, Inc. +// Contributed by Nathan Sidwell 21 Nov 1999 <nathan@acm.org> + +// make sure we only warn on assigning a negative (signed) value +// to an unsigned type, and don't warn just if the unsigned value +// happens to have the top bit set. + +typedef unsigned U; + +void fn (unsigned); + +void fu () +{ + unsigned s1 = -1u; + unsigned s2(-1u); + unsigned volatile s3 = -1u; + unsigned const s4 = -1u; + unsigned const &s5(-1u); + s1 = -1u; + fn (-1u); +} + +void fU () +{ + U s1 = -1u; + U s2(-1u); + U volatile s3 = -1u; + U const s4 = -1u; + U const &s5(-1u); + s1 = -1u; + fn (-1u); +} + +void fs () +{ + unsigned s1 = -1; // { dg-warning "" } initialization + unsigned s2(-1); // { dg-warning "" } initialization + unsigned volatile s3 = -1;// { dg-warning "" } initialization + unsigned const s4 = -1; // { dg-warning "" } initialization + unsigned const &s5(-1); // { dg-warning "" } initialization + s1 = -1; // { dg-warning "" } assignment + fn (-1); // { dg-warning "" } passing +} + +void fss () +{ + unsigned s1 = -(-1); + unsigned s2(-(-1)); + unsigned volatile s3 = -(-1); + unsigned const s4 = -(-1); + unsigned const &s5(-(-1)); + s1 = -(-1); + fn (-(-1)); +} + +void fsz () +{ + unsigned s1 = -0; + unsigned s2(-0); + unsigned volatile s3 = -0; + unsigned const s4 = -0; + unsigned const &s5(-0); + s1 = -0; + fn (-0); +} |