Enforcing C++98/03 for clang











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The following code is rejected by latest gcc with -std=c++98 option enabled:



#include <random>
int main() {}


due to the c++11 nature of <random> header. But clang accepts it with no warning/error.



Is there a way to say clang to use the c++98/03 standard only? Maybe a bug?










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  • 1




    Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
    – Galik
    Nov 21 at 13:13








  • 2




    "Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
    – StoryTeller
    Nov 21 at 13:20










  • @YSC from the clang's point of view - maybe... Did clang exist in '03?
    – älёxölüt
    Nov 21 at 13:53










  • @StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
    – MSalters
    Nov 21 at 14:06










  • @MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
    – StoryTeller
    Nov 21 at 14:09















up vote
2
down vote

favorite












The following code is rejected by latest gcc with -std=c++98 option enabled:



#include <random>
int main() {}


due to the c++11 nature of <random> header. But clang accepts it with no warning/error.



Is there a way to say clang to use the c++98/03 standard only? Maybe a bug?










share|improve this question




















  • 1




    Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
    – Galik
    Nov 21 at 13:13








  • 2




    "Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
    – StoryTeller
    Nov 21 at 13:20










  • @YSC from the clang's point of view - maybe... Did clang exist in '03?
    – älёxölüt
    Nov 21 at 13:53










  • @StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
    – MSalters
    Nov 21 at 14:06










  • @MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
    – StoryTeller
    Nov 21 at 14:09













up vote
2
down vote

favorite









up vote
2
down vote

favorite











The following code is rejected by latest gcc with -std=c++98 option enabled:



#include <random>
int main() {}


due to the c++11 nature of <random> header. But clang accepts it with no warning/error.



Is there a way to say clang to use the c++98/03 standard only? Maybe a bug?










share|improve this question















The following code is rejected by latest gcc with -std=c++98 option enabled:



#include <random>
int main() {}


due to the c++11 nature of <random> header. But clang accepts it with no warning/error.



Is there a way to say clang to use the c++98/03 standard only? Maybe a bug?







c++ clang c++98






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 at 13:07

























asked Nov 21 at 13:06









älёxölüt

1,86511446




1,86511446








  • 1




    Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
    – Galik
    Nov 21 at 13:13








  • 2




    "Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
    – StoryTeller
    Nov 21 at 13:20










  • @YSC from the clang's point of view - maybe... Did clang exist in '03?
    – älёxölüt
    Nov 21 at 13:53










  • @StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
    – MSalters
    Nov 21 at 14:06










  • @MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
    – StoryTeller
    Nov 21 at 14:09














  • 1




    Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
    – Galik
    Nov 21 at 13:13








  • 2




    "Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
    – StoryTeller
    Nov 21 at 13:20










  • @YSC from the clang's point of view - maybe... Did clang exist in '03?
    – älёxölüt
    Nov 21 at 13:53










  • @StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
    – MSalters
    Nov 21 at 14:06










  • @MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
    – StoryTeller
    Nov 21 at 14:09








1




1




Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
– Galik
Nov 21 at 13:13






Unfortunately most compilers seem to allow non standard elements by default (no idea why). On GCC to force standard compliance you need the -pedantic-errors flag. Maybe its the same for clang++?
– Galik
Nov 21 at 13:13






2




2




"Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
– StoryTeller
Nov 21 at 13:20




"Maybe a bug?" - Definitely a bug. One that's unlikely to be caught since legacy code won't actually include modern headers
– StoryTeller
Nov 21 at 13:20












@YSC from the clang's point of view - maybe... Did clang exist in '03?
– älёxölüt
Nov 21 at 13:53




@YSC from the clang's point of view - maybe... Did clang exist in '03?
– älёxölüt
Nov 21 at 13:53












@StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
– MSalters
Nov 21 at 14:06




@StoryTeller: What exactly makes it a bug? If <random> is surrounded by one huge #if __cplusplus > 199711L, making it effectively empty in C++98, I'd be hard-pressed to find wording in C++98 making that a bug.
– MSalters
Nov 21 at 14:06












@MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
– StoryTeller
Nov 21 at 14:09




@MSalters - If only... wandbox.org/permlink/atmIpYn3tYY1e040
– StoryTeller
Nov 21 at 14:09

















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