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* [Bug c/46158] New: Spurious never executed warning
@ 2010-10-24 19:54 wkf at alum dot mit.edu
2010-10-24 19:59 ` [Bug c/46158] " wkf at alum dot mit.edu
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: wkf at alum dot mit.edu @ 2010-10-24 19:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46158
Summary: Spurious never executed warning
Product: gcc
Version: 4.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: wkf@alum.mit.edu
// test.cpp
#define testIt(expression) \
{ \
if (expression) { \
throw true; \
} \
}
void
useIt()
{
bool eof = false;
testIt(eof)
}
// End of test.cpp
--------------------------------------------
gcc --version; gcc -Werror -Wunreachable-code -o test.o test.cpp
--------------------------------------------
gcc (GCC) 4.2.1 20070719 [FreeBSD]
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
cc1plus: warnings being treated as errors
test.cpp: In function 'void useIt()':
test.cpp:15: warning: will never be executed
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug c/46158] Spurious never executed warning 2010-10-24 19:54 [Bug c/46158] New: Spurious never executed warning wkf at alum dot mit.edu @ 2010-10-24 19:59 ` wkf at alum dot mit.edu 2010-10-25 21:02 ` pinskia at gcc dot gnu.org 2010-10-25 21:02 ` [Bug middle-end/46158] " pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: wkf at alum dot mit.edu @ 2010-10-24 19:59 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46158 --- Comment #1 from William K Foster <wkf at alum dot mit.edu> 2010-10-24 19:59:23 UTC --- Also, in a much more complicated test case (not provided) I get a much more obtuse warning message that does not refer me to my file, but instead a header: /usr/include/c++/4.2/bits/allocator.h: In copy constructor 'std::allocator<_Alloc>::allocator(const std::allocator<_Alloc>&) [with _Tp = char]': /usr/include/c++/4.2/bits/allocator.h:103: warning: will never be executed /usr/include/c++/4.2/bits/allocator.h:102: warning: will never be executed /usr/include/c++/4.2/ext/new_allocator.h: In copy constructor '__gnu_cxx::new_allocator<_Tp>::new_allocator(const __gnu_cxx::new_allocator<_Tp>&) [with _Tp = char]': /usr/include/c++/4.2/ext/new_allocator.h:70: warning: will never be executed /usr/include/c++/4.2/bits/allocator.h: In destructor 'std::allocator<_Alloc>::~allocator() [with _Tp = char]': /usr/include/c++/4.2/bits/allocator.h:108: warning: will never be executed /usr/include/c++/4.2/ext/new_allocator.h: In destructor '__gnu_cxx::new_allocator<_Tp>::~new_allocator() [with _Tp = char]': /usr/include/c++/4.2/ext/new_allocator.h:75: warning: will never be executed /usr/include/c++/4.2/bits/allocator.h: In destructor 'std::allocator<_Alloc>::~allocator() [with _Tp = char]': /usr/include/c++/4.2/bits/allocator.h:108: warning: will never be executed gmake: *** [ARCH.freebsd_61_i86/debug/opFlume_delta.o] Error 1 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/46158] Spurious never executed warning 2010-10-24 19:54 [Bug c/46158] New: Spurious never executed warning wkf at alum dot mit.edu 2010-10-24 19:59 ` [Bug c/46158] " wkf at alum dot mit.edu @ 2010-10-25 21:02 ` pinskia at gcc dot gnu.org 2010-10-25 21:02 ` [Bug middle-end/46158] " pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2010-10-25 21:02 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46158 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |WONTFIX --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2010-10-25 21:01:51 UTC --- -Wunreachable-code is broken and has been removed from GCC 4.5. Do not use it. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/46158] Spurious never executed warning 2010-10-24 19:54 [Bug c/46158] New: Spurious never executed warning wkf at alum dot mit.edu 2010-10-24 19:59 ` [Bug c/46158] " wkf at alum dot mit.edu 2010-10-25 21:02 ` pinskia at gcc dot gnu.org @ 2010-10-25 21:02 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2010-10-25 21:02 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46158 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|c |middle-end Target Milestone|--- |4.5.0 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-10-25 21:02 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-10-24 19:54 [Bug c/46158] New: Spurious never executed warning wkf at alum dot mit.edu 2010-10-24 19:59 ` [Bug c/46158] " wkf at alum dot mit.edu 2010-10-25 21:02 ` pinskia at gcc dot gnu.org 2010-10-25 21:02 ` [Bug middle-end/46158] " pinskia at gcc dot gnu.org
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