www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 3495] New: Segfault(typinf.c) instantiating D variadic function with too few arguments

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=3495

           Summary: Segfault(typinf.c) instantiating D variadic function
                    with too few arguments
           Product: D
           Version: 1.051
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: clugdbug yahoo.com.au


--- Comment #0 from Don <clugdbug yahoo.com.au> 2009-11-11 05:39:45 PST ---
Segfaulting in createTypeInfoArray(): exps[i] is null.

Applies to DMD0.175 and later, including both D2.036 and D1.051.
---
void foo(int,...) {}

void bar(){
   foo();
}
---
arr.d(4): Error: function arr.foo (int _param_0,...) is not callable using
argum
ent types ()
arr.d(4): Error: expected 1 function arguments, not 0
<segfault>

Doesn't happen with C-style variadics.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Nov 11 2009
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=3495


Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


--- Comment #1 from Don <clugdbug yahoo.com.au> 2009-11-11 07:57:22 PST ---
CAUSE: if not enough arguments, tries to create a negatively-sized type info
array!

PATCH: expression.c, line 802 (DMD2 svn 241), at end of functionArguments():

---

    // If D linkage and variadic, add _arguments[] as first argument
-    if (tf->linkage == LINKd && tf->varargs == 1)
+    if (tf->linkage == LINKd && tf->varargs == 1 && arguments->dim >= nparams)
    {
    Expression *e;

    e = createTypeInfoArray(sc, (Expression **)&arguments->data[nparams],
        arguments->dim - nparams);
    arguments->insert(0, e);

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Nov 11 2009
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=3495


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |FIXED


--- Comment #2 from Walter Bright <bugzilla digitalmars.com> 2009-12-06
00:47:06 PST ---
Fixed dmd 1.053 and 2.037

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Dec 06 2009