diff options
Diffstat (limited to 'tests/custom/04_bugs/01_try_catch_stack_mismatch')
-rw-r--r-- | tests/custom/04_bugs/01_try_catch_stack_mismatch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/tests/custom/04_bugs/01_try_catch_stack_mismatch b/tests/custom/04_bugs/01_try_catch_stack_mismatch new file mode 100644 index 0000000..f6e5a0a --- /dev/null +++ b/tests/custom/04_bugs/01_try_catch_stack_mismatch @@ -0,0 +1,52 @@ +When compiling a try/catch statement with an exception variable, the catch +skip jump incorrectly pointed to the POP instruction popping the exception +variable off the stack, leading to a stack position mismatch between +compiler and vm, causing local variables to yield wrong values at runtime. + +-- Expect stdout -- +1 +-- End -- + +-- Testcase -- +{% + function f() { + let x; + + try { + x = 1; + } + catch(e) { + + } + + // Before the fix, `x` incorrectly yielded the print function value + print(x, "\n"); + } + + f() +%} +-- End -- + + +When compiling a try/catch statement with local variable declearations +within the try block, the catch skip jump incorrectly happened before the +local try block variables were popped off the stack, leading to a stack +position mismatch between compiler and vm, causing local variables to +yield wrong values at runtime. + +-- Expect stdout -- +1 +-- End -- + +-- Testcase -- +{% + try { + let a; + } + catch {} + + let b = 1; + + print(b, "\n"); +%} +-- End -- |