filcab added a comment.
Please add some printf calls to the test, to show that you have the correct
Thanks for working on this.
Comment at: lib/asan/asan_thread.cc:141
@@ -140,3 +140,3 @@
if (!fake_stack_save && current_fake_stack)
Please make sure you're accounting for this. It seems the test is always
passing nullptr to start_switch, which shouldn't be done unless you're
finishing up a fiber execution, IIRC.
Comment at: lib/asan/asan_thread.cc:162
@@ -155,1 +161,3 @@
+ *size_old = stack_top_ - stack_bottom_;
stack_bottom_ = next_stack_bottom_;
I think the usual style is: one statement => no braces.
Comment at: test/asan/TestCases/Linux/swapcontext_annotation.cc:9
@@ -8,3 +8,3 @@
// This test is too subtle to try on non-x86 arch for now.
-// REQUIRES: x86_64-supported-target,i386-supported-target
+// REQUIRES: x86-target-arch
> andriigrynenko wrote:
> > The test was actually broken in trunk (not updated for the fakestack
> > argument). Apparently it was never run (considered unsupported) because of
> > wrong targets here.
> Indeed, my bad, I forgot to compile and run the tests after the last
> modification I made to that patch. Sorry for that.
> I didn't need to change this line to run them on my computer though, but if
> you know what you are doing with this line, it's ok. And it's strange indeed
> that no buildfarm caught this...
They wouldn't catch tests not being run.
Test with LLVM_LIT_ARGS=-v (instead of -sv) on your cmake config and
double-check that the tests are run.
Comment at: test/asan/TestCases/Linux/swapcontext_annotation.cc:47
@@ -46,3 +46,3 @@
+ __sanitizer_finish_switch_fiber(NULL, NULL, NULL);
> #include <stddef.h> for NULL
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