One last tweak to the tracing machinery: this actually computes what I intended
all along. Before instr_lb tended to be too high.
I don't think this actually makes any difference, given what the compiler
produces, but it makes me a bit happier.
diff --git a/Python/ceval.c b/Python/ceval.c
index 4930433..afc480e 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -2966,15 +2966,17 @@
if (addr + *p > frame->f_lasti)
break;
addr += *p++;
+ if (*p) *instr_lb = addr;
line += *p++;
--size;
}
+
if (addr == frame->f_lasti) {
frame->f_lineno = line;
call_trace(func, obj, frame,
PyTrace_LINE, Py_None);
}
- *instr_lb = addr;
+
if (size > 0) {
while (--size >= 0) {
addr += *p++;