The rvgen parser for LTL stores literal true values in the python
representation (capitalised True), this doesn't build in C.
The Literal class should already handle this case but ASTNode skips its
strigification method and converts the value (true/false) directly.
Fix by delegating ASTNode stringification to the Literal and Variable
classes instead of bypassing them.
Fixes: 97ffa4ce6a ("verification/rvgen: Add support for linear temporal logic")
Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20260514152055.229162-8-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
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