On Tue, 21 Jun 2005, Feng Wang wrote:
> Hi,
>
> I want to write a testcase. The compiler gives two separated warnings on one
> statement. How to write this with Dejagnu?
>
> I tried:
> { dg-warning "Warning1" "Warning2" }
> and
> { dg-warning "Warning1" 8}
> { dg-warning "Warning2" 8}
> 8 is the line number of the statment.
The correct way of writing warning tests with a line number is
{ dg-warning "warning" } (on original line, no number needed)
{ dg-warning "warning 2" "description" { target *-*-* } 8 } (for each
other warning)
The description is needed and needs to be nonempty and distinct for the
second and subsequent warnings on a given line, because it is used to form
the distinct test assertion names which appear after PASS or FAIL in the
.sum files - having multiple tests with the same name causes ambiguity for
regression testers.
Listing the warnings separately like this is preferable to using a regular
expression which matches both warnings because this way you detect if just
one of the warnings disappears.
--
Joseph S. Myers http://www.srcf.ucam.org/~jsm28/gcc/
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