| Commit message (Collapse) | Author | Age |
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Some functions from pretyping/typing.ml and their derivatives were potential
source of evarmap leaks, as they dropped their resulting evarmap. This commit
clarifies the situation by renaming them according to a unsafe_* scheme. Their
sound variant is likewise renamed to their old name. The following renamings
were made.
- Typing.type_of -> unsafe_type_of
- Typing.e_type_of -> type_of
- A new e_type_of function that matches the e_ prefix policy
- Tacmach.pf_type_of -> pf_unsafe_type_of
- A new safe pf_type_of function.
All uses of unsafe_* functions should be eventually eliminated.
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It accepts three distinct flags:
- "Lax", which is the default one, sets the old behaviour, i.e. a non-imported
hint behaves the same as an imported one.
- "Warn" outputs a warning when a non-imported hint is used. Note that this is
an over-approximation, because a hint may be triggered by an eauto run that
will eventually fail and backtrack.
- "Strict" changes the behaviour of an unloaded hint to the one of the fail
tactic, allowing to emulate the hopefully future import-scoped hint mechanism.
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Since error messages are ultimately passed to Format, which has its own
buffers for concatenating strings, using concatenation for preparing error
messages just doubles the workload and increases memory pressure.
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We provide an eliminator ensuring that the AST will be used to build a tactic,
so that we can stuff arbitrary things inside. An escape function is also provided
for backward compatibility.
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pattern_of_constr in an evar_map, as they can appear in the context
of said named metas, which is used by change. Not sure what to do in
the PEvar case, which never matches anyway according to Constr_matching.matches.
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Pierre-Marie Pédrot
Guillaume Melquiond
Matthieu Sozeau
Maxime Dénès
Hugo Herbelin