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In case of redefinition of a typedef name with a different type.
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gricad-gitlab.univ-grenoble-alpes.fr:sixcy/CompCert into mppa-work
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mppa-work-upstream-merge
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mppa-work-upstream-merge
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Conflicts:
.gitignore
backend/Lineartyping.v
common/Values.v
configure
cparser/Machine.ml
cparser/Machine.mli
driver/Configuration.ml
driver/Frontend.ml
runtime/Makefile
test/c/Makefile
test/c/aes.c
test/compression/Makefile
test/regression/Makefile
test/regression/extasm.c
test/regression/floats-basics.c
test/regression/floats.c
Note : test/regression should be checked, didn't test it yet
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value for passing structs)
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mppa-work-upstream-merge
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mppa-if-conversion
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Conflicts:
.gitignore
runtime/include/stdbool.h
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Conflicts:
.gitignore
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See ISO C2011 standard, section 6.4.4.4 para 11.
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"open!" is the form used in the examples in the OCaml manual.
Based on a quick poll it seems to be the preferred form of the OCaml
core dev team.
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Some preprocessors don't remove the vertical tab from the input
so we should be able to handle them in the lexer.
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Previously, using an unknown builtin function was treated like any
other call to an undeclared function: a warning was emitted, and
an error occurred at link-time.
With this commit, using an unknown builtin function is an error,
like in Clang.
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Instead of constructing four different lists for maintaining the
state of the warnings only one list is now used. This list contains
the name of the warning and a boolean indicating whether this option
should be active by default. The rest is computed from this list.
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* Extend check for incomplete type.
Extended the check to also include a check for variables with
incomplete object type that are not arrays, that have an
initializer. Furthermore the warning includes the type and variable
name.
* Warning for incomplete type in compound literals.
Incomplete types are not allowed for compound literals, except for
array types.
* Extend type printing function.
The type of a typedeof of an anonymous type should not be printed.
Furthermore added '<anonymous>' to the printing of anonymous types.
* Unify incomplete type errors message.
The incomplete type error messages should all look the same including
name of the variable, parameter, etc. and then the incomplete type.
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In ISO C, inline functions behaves differently whether they have been declared `extern` at least once or not (i.e. all the declarations have no `extern` and no `static` modifier).
Hence, functions that have been declared / defined `extern` once should remain `extern` when redeclared without `extern`. This gives the ISO C behavior for inline functions and has no impact for non-inline functions.
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This commit adds a back-end for the AArch64 architecture, namely ARMv8
in 64-bit mode.
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It is type-checked like a conditional expression then translated to
a call to the known builtin function.
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Move its definitions to modules C (the type `builtins`) and Env
(the operations that deal with the initial environment).
Reasons for the refactoring:
1- The name "Builtins" will soon be reused for a Coq module
2- `Env.initial()` makes more sense than `Builtins.environment()`.
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The warning should only be active if the optimization is active,
so the check is only performed when the warning is active and
additionally the command line flag -Obranchless is specified.
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* Do not use `Pervasives.xxx` qualified names
Starting with OCaml 4.08, `Pervasives` is deprecated in favor of `Stdlib`,
and uses of `Pervasives` cause fatal warnings.
This commit uses unqualified names instead, as no ambiguity occurs.
* Clarify "open" statements
OCaml 4.08.0 has stricter warnings concerning open statements that
shadow module names.
Closes: #300
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What's new:
1. A rewrite of the Coq interpreter of Menhir automaton, with
dependent types removing the need for runtime checks for the
well-formedness of the LR stack. This seem to cause some speedup on
the parsing time (~10% for lexing + parsing).
2. Thanks to 1., it is now possible to avoid the use of int31 for
comparing symbols: Since this is only used for validation,
positives are enough.
3. Speedup of Validation: on my machine, the time needed for compiling
Parser.v goes from about 2 minutes to about 1 minute. This seem to
be related to a performance bug in the completeness validator and
to the use of positive instead of int31.
3. Menhir now generates a dedicated inductive type for
(semantic-value-carrying) tokens (in addition to the already
existing inductive type for (non-semantic-value-carrying)
terminals. The end result is that the OCaml support code for the
parser no longer contain calls to Obj.magic. The bad side of this
change is that the formal specification of the parser is perhaps
harder to read.
4. The parser and its library are now free of axioms (I used to use
axiom K and proof irrelevance for easing proofs involving dependent
types).
5. Use of a dedicated custom negative coinductive type for the input
stream of tokens, instead of Coq stdlib's `Stream`. `Stream` is a
positive coinductive type, which are now deprecated by Coq.
6. The fuel of the parser is now specified using its logarithm instead
of its actual value. This makes it possible to give large fuel
values instead of using the `let rec fuel = S fuel` hack.
7. Some refactoring in the lexer, the parser and the Cabs syntax tree.
The corresponding changes in Menhir have been released as part of
version 20190626. The `MenhirLib` directory is identical to the
content of the `src` directory of the corresponding `coq-menhirlib`
opam package except that:
- In order to try to make CompCert compatible with several Menhir
versions without updates, we do not check the version of menhir
is compatible with the version of coq-menhirlib. Hence the
`Version.v` file is not present in CompCert's copy.
- Build-system related files have been removed.
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The new diagnostics is triggered if a conditional is used that
may not be transformed into linear code by the later by the
if conversion.
The new diagnostic is emitted if a conditional may contain an
unsafe expression or is contained within another conditional,
logical and or logical or expression. An expression is unsafe if
it contains a call, changes memory or if its evaluation leads to
undefined behavior, for example division and modulo.
Also fixes a small typo in a comment in Cutil.
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The function determines whether the given type is an array type
or not.
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Refactored the checks functions by using higher order traversal
functions for statements. Also introduce helper functions for the
traversal of initializers.
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There should only be one unnamed parameter of type void in the
parameter list.
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This is a manual, partial merge of Github pull request #296 by @Fourchaux.
flocq/, cparser/MenhirLib/ and parts of test/ have not been changed
because these are local copies and the fixes should be performed upstream.
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The arguments that are passed to an unprototyped function must
also be checked to be valid types passed to a function, i.e. they
must be complete types after argument conversion.
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Since a definition/declaration is completed with after the
separator to the next init group member it is also possible to
use it for example in the next init group member:
char s[]="miaou", buf[sizeof s];
In order to ensure that this works the declarations are added to
the environment directly during the elaboration of the init member
group instead of later.
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The AbsInt build number no longer contains "release", so it must
be printed additionally.
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`_Complex` and `_Imaginary` are reserved keywords. Since CompCert does
not support these types they could be used as identifiers. However
the standard requires to reject this.
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Pass the environment to all expr eval functions since
the functions themselve may be called recursively and modify
the environment.
The other change introduces new scopes that are strict
subsets of their surrounding scopes for if, switch, while,
do and for statement, as prescribed by ISO C standards.
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Since the error formatter is not automatically flushed at program
exit we need to ensure that it is flushed at exit.
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In order to avoid adding ranges to the wrong scopes due to
inlining they are numbered consecutively for the whole compilation
unit.
Bug 26234
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The previous check was incomplete for integer literals in base 10.
Bug 26119
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