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Cases generator gets confused about the number of values to pop in case of errors in some macros #122155
Description
Bug report
Bug description:
This input:
op(FIRST, (x, y -- a, b)) {
a = x;
b = y;
}
op(SECOND, (a, b -- a, b)) {
}
op(THIRD, (j, k --)) {
ERROR_IF(cond, error);
}
macro(TEST) = FIRST + SECOND + THIRD;
"""
Generates:
...
if (cond) goto pop_4_error;
...
This should be if (cond) goto pop_2_error;
I noticed this error when working on a fix to #122029, so this isn't just a theoretical bug.
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response
Activity
GH-122155: Fix cases generator to correctly compute 'peek' offset for…
pythonGH-122155: Fix cases generator to correctly compute 'peek' offs…
pythonGH-122155: Fix cases generator to correctly compute 'peek' offs…
pythonGH-122155: Fix cases generator to correctly compute 'peek' offs…
[3.13] GH-122155: Fix cases generator to correctly compute 'peek' off…
GH-122155: Track local variables between pops and pushes in cases gen…
pythonGH-122155: Track local variables between pops and pushes in cas…