Alt-Ergo reports about " bool and int cannot be unified"

ID0002355: This issue was created automatically from Mantis Issue 2355. Further discussion may take place here.

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Id	Project	Category	View	Due Date	Updated
ID0002355	Frama-C	Plug-in > clang	public	2018-02-05	2018-02-05

Reporter	jens	Assigned To	virgile	Resolution	open
Priority	normal	Severity	minor	Reproducibility	always
Platform	-	OS	-	OS Version	-
Product Version	Frama-C 16-Sulfur	Target Version	-	Fixed in Version	-

Description :

If the attached simple C++ file is processed with the command line

frama-c  -wp -wp-rte  -warn-unsigned-downcast   -wp-out equal.wp++  equal.cpp

then the following error message occurs:

[wp] [Alt-Ergo] Goal typed__Z5equali_assert_rte_unsigned_downcast : Failed characters 4-22:typing error: bool and int cannot be unified

Could it be that Frama-Clang (or WP?) treats the return value of operator == as int instead of bool?

Additional Information :

The error message disappears when the option "-warn-unsigned-downcast" is omitted.

Attachments

• equal.cpp