Add EXC_SYSCALL to the set of ignorable mach exceptions.

Add some more tests of what exceptions we accept and don't accept.

Differential Revision: https://reviews.llvm.org/D151843

2 files changed, 17 insertions, 4 deletions

diff --git a/lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp b/lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
index 60327fb..f3f0fd7 100644
--- a/lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
+++ b/lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
@@ -63,7 +63,8 @@ static Status ExceptionMaskValidator(const char *string, void *unused) {
           || candidate == "EXC_BAD_INSTRUCTION"
           || candidate == "EXC_ARITHMETIC"
           || candidate == "EXC_RESOURCE"
-          || candidate == "EXC_GUARD")) {
+          || candidate == "EXC_GUARD"
+          || candidate == "EXC_SYSCALL")) {
       error.SetErrorStringWithFormat("invalid exception type: '%s'",
           candidate.str().c_str());
       return error;
diff --git a/lldb/test/API/macosx/ignore_exceptions/TestIgnoredExceptions.py b/lldb/test/API/macosx/ignore_exceptions/TestIgnoredExceptions.py
index 677e631..429f1db 100644
--- a/lldb/test/API/macosx/ignore_exceptions/TestIgnoredExceptions.py
+++ b/lldb/test/API/macosx/ignore_exceptions/TestIgnoredExceptions.py
@@ -30,10 +30,22 @@ class TestDarwinSignalHandlers(TestBase):
             "EXC_BAD_AXESS",
             error=True,
         )
-        # Now set ourselves to ignore some exceptions.  The test depends on ignoring EXC_BAD_ACCESS, but I passed a couple
-        # to make sure they parse:
+        # Make sure that we don't accept exceptions that lldb/debugserver need:
+        self.match(
+            "settings set platform.plugin.darwin.ignored-exceptions EXC_BREAKPOINT",
+            "EXC_BREAKPOINT",
+            error=True,
+        )
+        # Make sure that we don't accept exceptions that lldb/debugserver need:
+        self.match(
+            "settings set platform.plugin.darwin.ignored-exceptions EXC_SOFT_SIGNAL",
+            "EXC_SOFT_SIGNAL",
+            error=True,
+        )
+        # Now set ourselves to ignore some exceptions.  The test depends on ignoring EXC_BAD_ACCESS, but I passed all the
+        # ones we currently accept to make sure they parse:
         self.runCmd(
-            "settings set platform.plugin.darwin.ignored-exceptions EXC_BAD_ACCESS|EXC_ARITHMETIC"
+            "settings set platform.plugin.darwin.ignored-exceptions EXC_BAD_ACCESS|EXC_BAD_INSTRUCTION|EXC_ARITHMETIC|EXC_RESOURCE|EXC_GUARD|EXC_SYSCALL"
         )
         (target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(
             self, "Stop here to get things going", self.main_source_file