[Bug c++/37213] Declaration/expression ambiguity resolution does not extend beyond initializer

[schaub.johannes at googlemail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37213

Johannes Schaub schaub.johannes at googlemail dot com changed:

   What|Removed |Added

 CC||schaub.johannes at
   ||googlemail dot com

--- Comment #4 from Johannes Schaub schaub.johannes at googlemail dot com 
2010-12-27 11:24:36 UTC ---
Same problem happens with

int m;
int(m), m++;

I think GCC is wrong rejecting this.

[Bug c++/37213] Declaration/expression ambiguity resolution does not extend beyond initializer

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37213

Jonathan Wakely redi at gcc dot gnu.org changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2010.12.27 14:36:50
 Ever Confirmed|0   |1

--- Comment #5 from Jonathan Wakely redi at gcc dot gnu.org 2010-12-27 
14:36:50 UTC ---
(In reply to comment #0)
 typedef S* (*FuncType)(int,int);
 int x,y;
 S* a() {
   FuncType(a)(x,y)-z = 0; // treated as declaration

calling 'a' through a function pointer of a different type is undefined
behaviour, but fixing that doesn't change the error, which I agree is wrong.

[Bug c++/37213] Declaration/expression ambiguity resolution does not extend beyond initializer

[akyrtzi at gmail dot com]

--- Comment #3 from akyrtzi at gmail dot com  2008-10-08 09:19 ---
And some bit of C++ standard wisdom:
C++ 6.8p1: To disambiguate, the whole statement might have to be examined to
determine if it is an expression-statement or a declaration

And there's this example given:

T(a)-m = 7; // expression-statement

I think the same applies to the example I gave:

T(a)(x,y)-m = 7; // should be an expression


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37213

[Bug c++/37213] Declaration/expression ambiguity resolution does not extend beyond initializer

[pinskia at gcc dot gnu dot org]

--- Comment #1 from pinskia at gcc dot gnu dot org  2008-08-24 22:28 ---
I think GCC is correct here.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37213

[Bug c++/37213] Declaration/expression ambiguity resolution does not extend beyond initializer

[akyrtzi at gmail dot com]

--- Comment #2 from akyrtzi at gmail dot com  2008-08-24 22:42 ---
I forgot to mention that both MSVC and Comeau compilers interpret

FuncType(a)(x,y)-z = 0;

as expression and compile the test program without errors.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37213