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* Avoid overflows and report an error.Bernhard Schommer2017-01-311-7/+7
| | | | | | | Instead of multiplying the array constant directly with the size of the offset the cautious_mul function is used to detect potential overflows. Bug 20765
* Normalize offset to size_t kind.Bernhard Schommer2017-01-311-2/+4
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* Remove superfluous check.Bernhard Schommer2017-01-311-7/+4
| | | | | | Gcc and clang do not raise an error for this, also it should work for the last array element which can be without size. Bug 20765
* New version to support designators.Bernhard Schommer2017-01-241-8/+33
| | | | | | | | | The c standard allows member designators for offsetof. The current implementation works by recursively combining the offset of each of the member designators. For array access the size of the subtypes is multiplied by the index and for members the offset of the member is calculated. Bug 20765
* Simplified version.Bernhard Schommer2017-01-201-10/+8
| | | | | | | | The problem was that sub structs are were not correctly aligned. The new version is much simpler and uses the sizeof_struct to calculate the individual offsets and add them up to get correct offest. Bug 20765
* Also support union. Bug 20765Bernhard Schommer2017-01-201-3/+4
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* Implement offsetof via builtin.Bernhard Schommer2017-01-201-0/+16
| | | | | | | | | | | | The implementation of offsetof as macro in the form ((size_t) &((ty*) NULL)->member) has the problem that it cannot be used everywhere were an integer constant expression is allowed, for example in initiliazers of global variables and there is also no check for the case that member is of bitifield type. The new implementation adds a builtin function for this which is replaced by an integer constant during elaboration. Bug 20765
* Allow multiple nameless bit field fields.Bernhard Schommer2016-12-291-2/+4
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* Avoid exception catch-allXavier Leroy2016-12-261-1/+1
| | | | "try ...; true with _ -> false" is dangerous if "..." raises unexpected exceptions such as Out_of_memory or Stack_overflow.
* Cosmetic indentation changeXavier Leroy2016-12-261-5/+4
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* Added code for initializers. Bug 20003Bernhard Schommer2016-12-121-1/+19
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* Moved naming and changed names of aux functionsBernhard Schommer2016-12-121-16/+20
| | | | | | | | The naming of anonymous structs is performed by an additional step in elab_struct_or_union_info instead of in elab_field_group. Also the aux functions are renamed to access. Bug 20003
* Next try for support of anonymous structs.Bernhard Schommer2016-12-071-25/+54
| | | | | | Instead of using idents the anonymous fileds get names of the for <anon>_c where c is a counter of all anonymous members. Bug 20003
* Warning for C11 _Noreturn feature.Bernhard Schommer2016-11-221-4/+10
| | | | The warning for C11 features is now also triggered for _Noreturn.
* Warning for decls without name in composites.Bernhard Schommer2016-11-221-1/+3
| | | | | | The warning missing declarations is now also triggered for declarations without name in field lists of composite types if the declaration is not an anonymous composite or a bitfield member.
* Keep anonymous members of anonymous structs.Bernhard Schommer2016-09-271-2/+4
| | | | | The anonymous members are kept but using them is still an error. Bug 19907
* Improved error messages for wrong vararg calls.Bernhard Schommer2016-09-231-2/+3
| | | | | | Now "expected at least %d" instead of "expected %d". Also improved error message for __builtin_debug. Bug 19872
* Renamed pedantic to implicit-int.Bernhard Schommer2016-09-221-1/+1
| | | | | | | | The only case where compcert raise a pedantic warning was for implicit int parameters. This is the behavior of clang. However since not all other pedantic warnings are supported the behavior of gcc is adopted. Bug 19872.
* Reverted noisy change.Bernhard Schommer2016-09-221-1/+1
| | | | | | In order to empty declarations it is necessary to distinguish between forward declarations and empty declarations. Bug 19859
* Also warn for empty default declarations. Bug 18004Bernhard Schommer2016-09-211-1/+1
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* Make unnamed default + correct empty struct warning. Bug 18004Bernhard Schommer2016-09-211-2/+2
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* Allow empty alignment attribute. Bug 18004Bernhard Schommer2016-09-211-0/+1
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* Fixed typos and reverted error message. Bug 18004Bernhard Schommer2016-09-051-9/+9
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* Readded parameter number. Bug 18004Bernhard Schommer2016-09-011-6/+6
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* Reworded warning. Bug 18004Bernhard Schommer2016-09-011-6/+6
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* Simplified int to pointer tests.Bernhard Schommer2016-09-011-15/+15
| | | | | | Now the same warning is triggered for both cases, int to ptr and ptr to int. Bug 18004
* Fixed error message for & operator. Bug 18004Bernhard Schommer2016-08-311-1/+1
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* Added conformance warning.Bernhard Schommer2016-08-311-0/+1
| | | | | | This warning should be triggered if a feature is used that is not part of the code CompCert C language. Bug 18004
* Added back logical operator in error. Bug 18004Bernhard Schommer2016-08-311-1/+1
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* Reworded errors/warnings in Elab.Bernhard Schommer2016-08-311-60/+76
| | | | | | | | Some old errors/warnings messages were better before and are now rephrased. Furthermore some formulations are rephrased to match the used formulations of the ISO C stanard, e.g. storage class is replaced with storage-class. Bug 18004
* bug 18004, fix some typos/grammarMichael Schmidt2016-08-301-4/+4
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* Fixed types in Elab.ml. Bug 18004Bernhard Schommer2016-08-291-5/+5
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* Merge branch 'master' into advanced-diagnosticsBernhard Schommer2016-08-291-8/+18
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| * Pass the environment of k&r param elaboration.Bernhard Schommer2016-08-291-8/+10
| | | | | | | | | | | | The environment where the types are inserted is passed back to allow introducing structs in k&r parameters. Bug 19668
| * Fixed spelling mistake and unnamed fields.Bernhard Schommer2016-08-291-3/+6
| | | | | | | | | | | | The previous fix for duplicated members was also triggered for unnamed members. Bug 19665
| * Added check for duplicated members. Bug 19665Bernhard Schommer2016-08-291-0/+5
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* | Merge branch 'master' into advanced-diagnosticsBernhard Schommer2016-08-291-77/+102
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| * Reuse types from parameters in function definitonsBernhard Schommer2016-08-251-41/+42
| | | | | | | | | | | | In order to allow introducing structs in parameter definitions the environment must keep the type information. Bug 19602
| * Test if struct is redefined as union or otherwise.Bernhard Schommer2016-08-251-0/+2
| | | | | | | | | | | | If a declaration of a composite is encountered it is also tested if the kind is equal. Bug 19630.
| * Fix for initialization of incomplete typesBernhard Schommer2016-08-231-3/+3
| | | | | | | | | | | | Since some incomplete types are allowed in initialization just test whether the default initilization exists. Bug 19601
| * Added types found in cast to Environment.Bernhard Schommer2016-08-231-2/+2
| | | | | | | | | | | | New types introduced in casts are now inserted into the right Environment and carried along. Bug 19614.
| * Revert "Reuse env from during parameter elaboration."Bernhard Schommer2016-08-231-4/+4
| | | | | | | | This reverts commit c64c4ab2526ad87a3506c9e1fdf31fa1446c16eb.
| * Reuse env from during parameter elaboration.Bernhard Schommer2016-08-221-4/+4
| | | | | | | | | | Allows adding struct definitions in function parameters. Bug 19602.
| * Better error message for function initializerBernhard Schommer2016-08-221-0/+4
| | | | | | | | | | | | Initializers for function variables are not allowed. CompCert now reports an error and exits. Bug 19606
| * Test for incomplete type during initialization.Bernhard Schommer2016-08-221-1/+6
| | | | | | | | | | | | Before the initializazion is computed we check wether the type is incomplete. Bug 19601
| * Error for va_start in non-vararg function.Bernhard Schommer2016-08-221-27/+31
| | | | | | | | | | | | CompCert now reports an error for usage of the va_start macro in non variadic functions. Bug 19600.
| * Added check for incomplete parameter types.Bernhard Schommer2016-08-201-1/+5
| | | | | | | | | | Parameters also need to be checked for incomplete types. Bug 19596
| * Exit earlier on invalid alignof and sizeof.Bernhard Schommer2016-08-191-4/+4
| | | | | | | | | | | | Alginof and sizeof applied to incomplete types now exit earlier with a fatal error. Bug 19594.
| * Disallow void as type for variables.Bernhard Schommer2016-08-181-0/+2
| | | | | | | | | | | | This allows problems in elaboration of the initializers for variables of void type. Bug 19577.
| * Exit earlier on empty union.Bernhard Schommer2016-08-171-1/+5
| | | | | | | | | | | | | | Instead of a warning for an empty union CompCert reports an error and exits. This avoids problems during the generation of initializers for these. Bug 19565.
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