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* [Bug c++/17006] New: unused variable warning only shown on existing constructor
@ 2004-08-12 16:52 oliverst at online dot de
2004-08-12 17:35 ` [Bug c++/17006] " bangerth at dealii dot org
0 siblings, 1 reply; 2+ messages in thread
From: oliverst at online dot de @ 2004-08-12 16:52 UTC (permalink / raw)
To: gcc-bugs
The following code gives this warning:
62 C:\Dev-Cpp\Projects\gcc-test\main.cpp
[Warning] unused variable 'x'
If you uncomment the constructor, the warning does not appear.
class Test
{
public:
//Test() {}
};
int main(int argc, char *argv[])
{
Test x;
return 0;
}
Happened on Windows 2000 SP4 with gcc-3.4.1-20040711-1, mingw-
runtime-3.3 and win32api-2.5.
Compiled with "-Wunused".
--
Summary: unused variable warning only shown on existing
constructor
Product: gcc
Version: 3.4.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: oliverst at online dot de
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17006
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/17006] unused variable warning only shown on existing constructor
2004-08-12 16:52 [Bug c++/17006] New: unused variable warning only shown on existing constructor oliverst at online dot de
@ 2004-08-12 17:35 ` bangerth at dealii dot org
0 siblings, 0 replies; 2+ messages in thread
From: bangerth at dealii dot org @ 2004-08-12 17:35 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From bangerth at dealii dot org 2004-08-12 17:35 -------
That's documented behavior: the warning about unused variables is
only shown if the compiler can know that running con- and destructors
has no side-effects.
W.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17006
^ permalink raw reply [flat|nested] 2+ messages in thread
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2004-08-12 16:52 [Bug c++/17006] New: unused variable warning only shown on existing constructor oliverst at online dot de
2004-08-12 17:35 ` [Bug c++/17006] " bangerth at dealii dot org
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