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/* 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 "changes signedness" "case 1" } */
y > (tf?64:128); /* { dg-bogus "changes signedness" "case 2" } */
/* ?: branches are (recursively) constants. */
x > (tf?64:(tf?128:256)); /* { dg-bogus "changes signedness" "case 3" } */
y > (tf?64:(tf?128:256)); /* { dg-bogus "changes signedness" "case 4" } */
/* ?: branches are signed constants. */
x > (tf?64:-1); /* { dg-bogus "changes signedness" "case 5" } */
y > (tf?64:-1); /* { dg-warning "different signedness" "case 6" } */
/* ?: branches are (recursively) signed constants. */
x > (tf?64:(tf?128:-1)); /* { dg-bogus "changes signedness" "case 7" } */
y > (tf?64:(tf?128:-1)); /* { dg-warning "different signedness" "case 8" } */
/* Statement expression. */
x > ({tf; 64;}); /* { dg-bogus "changes signedness" "case 9" } */
y > ({tf; 64;}); /* { dg-bogus "changes signedness" "case 10" } */
/* Statement expression with recursive ?: . */
x > ({tf; tf?64:(tf?128:256);}); /* { dg-bogus "changes signedness" "case 11" } */
y > ({tf; tf?64:(tf?128:256);}); /* { dg-bogus "changes signedness" "case 12" } */
/* Statement expression with signed ?:. */
x > ({tf; tf?64:-1;}); /* { dg-bogus "changes signedness" "case 13" } */
y > ({tf; tf?64:-1;}); /* { dg-warning "different signedness" "case 14" } */
/* Statement expression with recursive signed ?:. */
x > ({tf; tf?64:(tf?128:-1);}); /* { dg-bogus "changes signedness" "case 15" } */
y > ({tf; tf?64:(tf?128:-1);}); /* { dg-warning "different signedness" "case 16" } */
/* ?: branches are constants. */
tf ? x : (tf?64:32); /* { dg-bogus "changes signedness" "case 17" } */
tf ? y : (tf?64:32); /* { dg-bogus "changes signedness" "case 18" } */
/* ?: branches are signed constants. */
tf ? x : (tf?64:-1); /* { dg-bogus "changes signedness" "case 19" } */
tf ? y : (tf?64:-1); /* { dg-warning "changes signedness" "case 20" } */
/* ?: branches are (recursively) constants. */
tf ? x : (tf?64:(tf?128:256)); /* { dg-bogus "changes signedness" "case 21" } */
tf ? y : (tf?64:(tf?128:256)); /* { dg-bogus "changes signedness" "case 22" } */
/* ?: branches are (recursively) signed constants. */
tf ? x : (tf?64:(tf?128:-1)); /* { dg-bogus "changes signedness" "case 23" } */
tf ? y : (tf?64:(tf?128:-1)); /* { dg-warning "changes signedness" "case 24" } */
}
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