GDB fixes

1 files changed, 10 insertions, 1 deletions

diff --git a/gdb-helpers/libcr.py b/gdb-helpers/libcr.py
index c07b679..3ffafce 100644
--- a/gdb-helpers/libcr.py
+++ b/gdb-helpers/libcr.py
@@ -26,6 +26,14 @@ def gdb_unregister_unwinder(
     gdb.invalidate_cached_frames()
 
 
+def gdb_is_on_os() -> bool:
+    try:
+        gdb.execute("info proc", to_string=True)
+        return True
+    except gdb.error:
+        return False
+
+
 class gdb_JmpBuf:
     """Our own in-Python GDB-specific implementation of `jmp_buf`"""
 
@@ -105,7 +113,8 @@ class CrGlobals:
         self._breakpoint.enabled = True
         gdb.execute(f"call (void)cr_gdb_readjmp({env_ptr_expr})")
         self._breakpoint.enabled = False
-        gdb.execute("queue-signal SIGWINCH")
+        if gdb_is_on_os():
+            gdb.execute("queue-signal SIGWINCH")
         return self._breakpoint.env
 
     def _on_cont(self, event: gdb.Event) -> None: