/* Test for a bogus warning on comparison between signed and unsigned. This was inspired by code in gcc. */ /* { dg-do compile } */ /* { dg-options "-Wsign-compare" } */ int tf = 1; void f(int x, unsigned int y) { /* ?: branches are constants. */ x > (tf?64:128); /* { dg-bogus "signed and unsigned" "case 1" } */ y > (tf?64:128); /* { dg-bogus "signed and unsigned" "case 2" } */ /* ?: branches are (recursively) constants. */ x > (tf?64:(tf?128:256)); /* { dg-bogus "signed and unsigned" "case 3" } */ y > (tf?64:(tf?128:256)); /* { dg-bogus "signed and unsigned" "case 4" } */ /* ?: branches are signed constants. */ x > (tf?64:-1); /* { dg-bogus "signed and unsigned" "case 5" } */ y > (tf?64:-1); /* { dg-warning "signed and unsigned" "case 6" } */ /* ?: branches are (recursively) signed constants. */ x > (tf?64:(tf?128:-1)); /* { dg-bogus "signed and unsigned" "case 7" } */ y > (tf?64:(tf?128:-1)); /* { dg-warning "signed and unsigned" "case 8" } */ /* Statement expression. */ x > ({tf; 64;}); /* { dg-bogus "signed and unsigned" "case 9" } */ y > ({tf; 64;}); /* { dg-bogus "signed and unsigned" "case 10" } */ /* Statement expression with recursive ?: . */ x > ({tf; tf?64:(tf?128:256);}); /* { dg-bogus "signed and unsigned" "case 11" } */ y > ({tf; tf?64:(tf?128:256);}); /* { dg-bogus "signed and unsigned" "case 12" } */ /* Statement expression with signed ?:. */ x > ({tf; tf?64:-1;}); /* { dg-bogus "signed and unsigned" "case 13" } */ y > ({tf; tf?64:-1;}); /* { dg-warning "signed and unsigned" "case 14" } */ /* Statement expression with recursive signed ?:. */ x > ({tf; tf?64:(tf?128:-1);}); /* { dg-bogus "signed and unsigned" "case 15" } */ y > ({tf; tf?64:(tf?128:-1);}); /* { dg-warning "signed and unsigned" "case 16" } */ /* ?: branches are constants. */ tf ? x : (tf?64:32); /* { dg-bogus "conditional expression" "case 17" } */ tf ? y : (tf?64:32); /* { dg-bogus "conditional expression" "case 18" } */ /* ?: branches are signed constants. */ tf ? x : (tf?64:-1); /* { dg-bogus "conditional expression" "case 19" } */ tf ? y : (tf?64:-1); /* { dg-warning "conditional expression" "case 20" } */ /* ?: branches are (recursively) constants. */ tf ? x : (tf?64:(tf?128:256)); /* { dg-bogus "conditional expression" "case 21" } */ tf ? y : (tf?64:(tf?128:256)); /* { dg-bogus "conditional expression" "case 22" } */ /* ?: branches are (recursively) signed constants. */ tf ? x : (tf?64:(tf?128:-1)); /* { dg-bogus "conditional expression" "case 23" } */ tf ? y : (tf?64:(tf?128:-1)); /* { dg-warning "conditional expression" "case 24" } */ }