Crash with multiple incompatible declarations

ID0000990: This issue was created automatically from Mantis Issue 990. Further discussion may take place here.

---

Id	Project	Category	View	Due Date	Updated
ID0000990	Frama-C	Kernel	public	2011-10-19	2014-02-12

Reporter	pascal	Assigned To	virgile	Resolution	fixed
Priority	normal	Severity	crash	Reproducibility	always
Platform	-	OS	-	OS Version	-
Product Version	Frama-C Nitrogen-20111001	Target Version	-	Fixed in Version	Frama-C Oxygen-20120901

Description :

~/ppc/bzip2-1.0.6 $ cat f1.c
char s[100];

void perror(const char *);

void f(void){
  perror(s);
}
~/ppc/bzip2-1.0.6 $ cat f2.c
char *s;

void perror(const char *);

void g(void){
  perror(s);
}
~/ppc/bzip2-1.0.6 $ ~/ppc/bin/toplevel.opt f2.c f1.c
[kernel] warning: cannot load 4 plug-ins (incompatible with Nitrogen-20111001+dev).
                  Aorai; Obfuscator; Security_slicing;
                  Wp
[kernel] preprocessing with "gcc -C -E -I.  f2.c"
[kernel] preprocessing with "gcc -C -E -I.  f1.c"
f2.c:1:[kernel] warning: Incompatible declaration for s (included from  f2.c). Previous was at f1.c:1
                  (include from f1.c) (different type constructors: char [100] vs. char *)]
f1.c:6:[kernel] failure: typeOf: StartOf on a non-array
[kernel] error occurring when exiting Frama-C: stopping exit procedure.
         The full backtrace is:
         Raised at file "src/kernel/log.ml", line 509, characters 30-31
         Called from file "src/kernel/log.ml", line 503, characters 9-16
         Re-raised at file "src/kernel/log.ml", line 506, characters 15-16
         Called from file "cil/src/mergecil.ml", line 1643, characters 36-48
         Called from file "cil/src/cil.ml", line 2256, characters 12-53
         Called from file "cil/src/cil.ml", line 1489, characters 13-16
         Called from file "cil/src/cil.ml", line 2395, characters 38-57
         Called from file "cil/src/cil.ml", line 1489, characters 13-16
         Called from file "cil/src/cil.ml", line 1534, characters 24-57
         Called from file "cil/src/cil.ml", line 2380, characters 5-52
         Called from file "cil/src/cil.ml", line 2506, characters 14-21
         Called from file "cil/src/cil.ml", line 1466, characters 21-41
         Called from file "cil/src/cil.ml", line 2424, characters 5-86
         Called from file "cil/src/cil.ml", line 1489, characters 13-16
         Called from file "cil/src/cil.ml", line 2558, characters 16-40
         Called from file "cil/src/cil.ml", line 1466, characters 21-41
         Called from file "cil/src/cil.ml", line 2771, characters 14-39
         Called from file "cil/src/cil.ml", line 1466, characters 21-41
         Called from file "cil/src/cil.ml", line 2746, characters 5-91
         Called from file "cil/src/cil.ml", line 2822, characters 16-38
         Called from file "cil/src/cil.ml", line 1489, characters 13-16
         Called from file "cil/src/cil.ml", line 1534, characters 24-57
         Called from file "cil/src/cil.ml", line 2816, characters 5-53
         Called from file "cil/src/mergecil.ml", line 2181, characters 11-41
         Called from file "list.ml", line 69, characters 12-15
         Called from file "cil/src/mergecil.ml", line 2465, characters 2-38
         Called from file "cil/src/mergecil.ml", line 2612, characters 22-36
         Called from file "list.ml", line 69, characters 12-15
         Called from file "cil/src/mergecil.ml", line 2612, characters 2-61
         Called from file "src/kernel/file.ml", line 830, characters 20-56
         Called from file "src/kernel/file.ml", line 1327, characters 12-30
         Called from file "src/kernel/file.ml", line 1412, characters 4-27
         Called from file "src/kernel/ast.ml", line 64, characters 2-28
         Called from file "src/kernel/ast.ml", line 71, characters 53-71
         Called from file "queue.ml", line 134, characters 6-20
         Called from file "src/kernel/cmdline.ml", line 174, characters 6-23
         
         Frama-C aborted because of internal error.
         Please report as 'crash' at http://bts.frama-c.com/.
         Your Frama-C version is Nitrogen-20111001+dev.
         Note that a version and a backtrace alone often does not have information
         to understand the bug. Guidelines for reporting bugs are at:
         http://bts.frama-c.com/dokuwiki/doku.php?id=mantis:frama-c:bug_reporting_guidelines
~/ppc/bzip2-1.0.6 $ 

Additional Information :

I think it would be ok just to be stricter for multiple incompatible declarations.