Jason Merrill <ja...@redhat.com> writes:
> On 06/01/2015 08:13 AM, Rainer Orth wrote:
>> Jason Merrill <ja...@redhat.com> writes:
>>
>>> -pedantic shouldn't change something from OK into an error, but it was
>>> doing so for redeclaration of a declaration from a system header with a
>>> mismatched exception specification. And whether we are strict about things
>>> in system headers should be controlled by -Wsystem-headers.
>>>
>>> Tested x86_64-pc-linux-gnu, applying to trunk.
>>
>> The new g++.dg/warn/Wsystem-headers1.C test FAILs on Solaris 10 and 11:
>>
>> FAIL: g++.dg/warn/Wsystem-headers1.C -std=c++98 (test for excess errors)
>>
>> /vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/warn/Wsystem-headers1.C:3:33:
>> error: 'double atof(const char*)' conflicts with a previous declaration
>> In file included from /usr/include/stdlib.h:17:0,
>> from
>> /vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/warn/Wsystem-headers1.C:1:
>> /var/gcc/regression/trunk/10-gcc/build/gcc/include-fixed/iso/stdlib_iso.h:119:15:
>> note: previous declaration 'double std::atof(const char*)'
>
> It's not clear what the conflict is. Can you quote the declaration from
> stdlib_iso.h?
sure: it's
extern double atof(const char *);
which is inside
#if __cplusplus >= 199711L
namespace std {
#endif
#ifdef __cplusplus
extern "C" {
#endif
Isn't this about global vs. std namespace?
Rainer
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
