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* [Bug c++/32364] New: Error from simple typedef/void combination
@ 2007-06-16 4:38 skunk at iskunk dot org
2007-06-16 4:53 ` [Bug c++/32364] " pinskia at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: skunk at iskunk dot org @ 2007-06-16 4:38 UTC (permalink / raw)
To: gcc-bugs
Came across this head-scratcher in building Qt with GCC 4.2.0. Heavily
simplified version:
foo.cxx:
typedef void (*funcptr)(void);
typedef void GLvoid;
typedef GLvoid (*_GLUfuncptr)(GLvoid);
int foo(void) { return 1; }
$ g++ -c foo.cxx
foo.cxx:4: error: '<anonymous>' has incomplete type
foo.cxx:4: error: invalid use of 'GLvoid'
Compiles fine with 4.1.2 and 2.95.4.
--
Summary: Error from simple typedef/void combination
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: skunk at iskunk dot org
GCC build triplet: i386-unknown-freebsd4.8
GCC host triplet: i386-unknown-freebsd4.8
GCC target triplet: i386-unknown-freebsd4.8
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32364
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug c++/32364] Error from simple typedef/void combination 2007-06-16 4:38 [Bug c++/32364] New: Error from simple typedef/void combination skunk at iskunk dot org @ 2007-06-16 4:53 ` pinskia at gcc dot gnu dot org 2007-08-15 19:08 ` craig dot powers at gmail dot com 2007-08-15 19:13 ` craig dot powers at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2007-06-16 4:53 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from pinskia at gcc dot gnu dot org 2007-06-16 04:53 ------- This is actually invalid C++ which we did not reject before 4.2.0. *** This bug has been marked as a duplicate of 9278 *** -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |DUPLICATE http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32364 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/32364] Error from simple typedef/void combination 2007-06-16 4:38 [Bug c++/32364] New: Error from simple typedef/void combination skunk at iskunk dot org 2007-06-16 4:53 ` [Bug c++/32364] " pinskia at gcc dot gnu dot org @ 2007-08-15 19:08 ` craig dot powers at gmail dot com 2007-08-15 19:13 ` craig dot powers at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: craig dot powers at gmail dot com @ 2007-08-15 19:08 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from craig dot powers at gmail dot com 2007-08-15 19:08 ------- (In reply to comment #0) > Came across this head-scratcher in building Qt with GCC 4.2.0. Heavily > simplified version: > > foo.cxx: > typedef void (*funcptr)(void); > > typedef void GLvoid; > typedef GLvoid (*_GLUfuncptr)(GLvoid); > > int foo(void) { return 1; } > > $ g++ -c foo.cxx > foo.cxx:4: error: '<anonymous>' has incomplete type > foo.cxx:4: error: invalid use of 'GLvoid' > > Compiles fine with 4.1.2 and 2.95.4. > You can patch GL/glu.h as e.g. #ifdef __cplusplus typedef void (*_GLUfuncptr)(void); #else typedef GLvoid (*_GLUfuncptr)(GLvoid); #endif I'm assuming that the line that now fails to compile in C++ is still valid C. I'll admit, I don't really see the point to using a typedef for void. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32364 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/32364] Error from simple typedef/void combination 2007-06-16 4:38 [Bug c++/32364] New: Error from simple typedef/void combination skunk at iskunk dot org 2007-06-16 4:53 ` [Bug c++/32364] " pinskia at gcc dot gnu dot org 2007-08-15 19:08 ` craig dot powers at gmail dot com @ 2007-08-15 19:13 ` craig dot powers at gmail dot com 2 siblings, 0 replies; 4+ messages in thread From: craig dot powers at gmail dot com @ 2007-08-15 19:13 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from craig dot powers at gmail dot com 2007-08-15 19:13 ------- Looking at CVS for glu.h, the official patch is: #ifdef __cplusplus typedef GLvoid (*_GLUfuncptr)(); #else ... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32364 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-08-15 19:13 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2007-06-16 4:38 [Bug c++/32364] New: Error from simple typedef/void combination skunk at iskunk dot org 2007-06-16 4:53 ` [Bug c++/32364] " pinskia at gcc dot gnu dot org 2007-08-15 19:08 ` craig dot powers at gmail dot com 2007-08-15 19:13 ` craig dot powers at gmail dot com
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