py/nlr: Add "memory" to asm clobbers list in nlr_jump.

Newer versions of gcc (14 and up) have more sophisticated dead-code
detection, and the asm clobbers list needs to contain "memory" to inform
the compiler that the asm code actually does something.

Tested that adding this "memory" line does not change the generated code on
ARM Thumb2, x86-64 and Xtensa targets (using gcc 13.2).

Fixes issue #14115.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/py/nlrmips.c b/py/nlrmips.c
index bd5d73b6f..cba52b16a 100644
--- a/py/nlrmips.c
+++ b/py/nlrmips.c
@@ -78,7 +78,7 @@ NORETURN void nlr_jump(void *val) {
         "nop            \n"
         :
         : "r" (top)
-        :
+        : "memory"
         );
     MP_UNREACHABLE
 }