diff options
| -rw-r--r-- | stmhal/pendsv.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/stmhal/pendsv.c b/stmhal/pendsv.c index 48fb79e20..5f5603f35 100644 --- a/stmhal/pendsv.c +++ b/stmhal/pendsv.c @@ -31,10 +31,12 @@ #include "py/runtime.h" #include "pendsv.h" -// Note: this can contain point to the heap but is not traced by GC. -// This is okay because we only ever set it to mp_const_vcp_interrupt -// which is in the root-pointer set. -STATIC void *pendsv_object; +// This variable is used to save the exception object between a ctrl-C and the +// PENDSV call that actually raises the exception. It must be non-static +// otherwise gcc-5 optimises it away. It can point to the heap but is not +// traced by GC. This is okay because we only ever set it to +// mp_const_vcp_interrupt which is in the root-pointer set. +void *pendsv_object; void pendsv_init(void) { // set PendSV interrupt at lowest priority |