0002507: Frama-C reports “invalid ghost in extern linkage specification” while loading files

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Project

Category

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Date Submitted

Last Update

0002507

Frama-C

Kernel

public

2020-06-06 23:39

2020-06-09 17:13

Reporter

dgenin

Assigned To

Priority

normal

Severity

major

Reproducibility

have not tried

Status

new

Resolution

open

Platform

x86

Ubuntu

OS Version

19.10

Product Version

Frama-C 20-Calcium

Target Version

Fixed in Version

Summary

0002507: Frama-C reports “invalid ghost in extern linkage specification” while loading files

Description

As I try to load my project files Frama-C reports the following error in the Console window and stops processing [kernel] FRAMAC_SHARE/libc/__fc_alloc_axiomatic.h:30: invalid ghost in extern linkage specification: Location: between lines 30 and 45, before or at token: } 28 #include "__fc_define_wchar_t.h" 29 30 __BEGIN_DECLS 31 32 /*@ ghost extern int __fc_heap_status __attribute__((FRAMA_C_MODEL)); */ 33 34 /*@ axiomatic dynamic_allocation { 35 @ predicate is_allocable{L}(integer n) // Can a block of n bytes be allocated? 36 @ reads __fc_heap_status; 37 @ // The logic label L is not used, but it must be present because the 38 @ // predicate depends on the memory state 39 @ axiom never_allocable{L}: 40 @ \forall integer i; 41 @ i < 0 || i > __FC_SIZE_MAX ==> !is_allocable(i); 42 @ } 43 */ 44 45 __END_DECLS 46 47 __POP_FC_STDLIB

Steps To Reproduce

not sure

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Notes
(0006978) dgenin (reporter) 2020-06-09 17:13	I traced the issue to the case of the file extension. It seems that if the file extension is .C the file is interpreted as C++ (maybe) and including stdlib.h causes the fault. I haven't checked if other librareris cause an issue. If the extension is .c then the file is interpreted as plain C and the file loads normally.

Issue History
Date Modified	Username	Field	Change
2020-06-06 23:39	dgenin	New Issue
2020-06-09 17:13	dgenin	Note Added: 0006978