On Friday, February 20, 2015 at 12:57:44 PM UTC+1, Ted Mielczarek wrote:
> On Thu, Feb 19, 2015, at 06:32 AM, [email protected] wrote:
> > On Tuesday, February 17, 2015 at 6:33:42 PM UTC+1, Ted Mielczarek wrote:
> > > On Tue, Feb 17, 2015, at 10:27 AM, Axel Hecht wrote:
> > > > Hi,
> > > >
> > > > I'd like to write tests to validate my assumptions around what's an
> > > > error
> > > > and what's a warning for localized values going into
> > > > nsTextFormatter::smprintf.
> > > >
> > > > Basically, the tests would start with a reference string, and then a
> > > > more
> > > > or less random modification of that string, and a check if the segments
> > > > are in, or if it crashes [1].
> > > >
> > > > So I'll need a .cpp core, and a wrapper that feeds it data and checks
> > > > the
> > > > output.
> > > >
> > > > Any suggestions on how to do that "right"?
> > >
> > > When you say "crashes" do you mean an actual program crash? If so,
> > > shouldn't we just be fixing these in nsTextFormatter? If you don't need
> > > to monitor actual crashes then a Gtest should work just fine here.
> > >
> > > -Ted
> >
> > I'm talking actual crashes, and I don't know how we would fix the text
> > formatter. I'm glancing at
> > http://mxr.mozilla.org/mozilla-central/source/xpcom/glue/nsTextFormatter.cpp#778,
> > and I had no idea how to fix the C++ API there.
> >
> > bug 1133554#c2 is a bug where we got it wrong in en-US, too. Doesn't
> > crash, but produces undesirable results.
> >
> > Note, folks using the stringbundle.formatStringFromName just use a
> > wstring array. The only code paths affected are those that get the
> > string, and explicitly call into nsTextFormatter from c++.
>
> Can you provide an example of a call that crashes? I still feel like the
> right outcome here is to make the code not crash.
>
> -Ted
I just tweaked the test:
diff --git a/xpcom/tests/TestTextFormatter.cpp
b/xpcom/tests/TestTextFormatter.cpp
--- a/xpcom/tests/TestTextFormatter.cpp
+++ b/xpcom/tests/TestTextFormatter.cpp
@@ -11,7 +11,7 @@
{
int test_ok = true;
- nsAutoString fmt(NS_LITERAL_STRING("%3$s %4$S %1$d %2$d %2$d %3$s"));
+ nsAutoString fmt(NS_LITERAL_STRING("%3$s %4$S %1$f %2$d %2$d %3$s"));
char utf8[] = "Hello";
char16_t ucs2[]={'W', 'o', 'r', 'l', 'd', 0x4e00, 0xAc00, 0xFF45, 0x0103,
0x00};
int d=3;
And then you get
../../dist/bin/TestTextFormatter
Segmentation fault: 11
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