https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100731
Bug ID: 100731
Summary: GCC 11 fails to build using GCC 4.8 because of missing
includes
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: harald at gigawatt dot nl
Target Milestone: ---
When building GCC 11 with GCC 4.8 on a platform without _GLIBCXX_USE_C99, the
build fails. The result is:
../../gcc-11.1.0/c++tools/server.cc: In function ‘void internal_error(const
char*, ...)’:
../../gcc-11.1.0/c++tools/server.cc:199:10: error: ‘exit’ was not declared in
this scope
exit (2);
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void error(const char*,
...)’:
../../gcc-11.1.0/c++tools/server.cc:233:10: error: ‘exit’ was not declared in
this scope
exit (1);
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void print_usage(int)’:
../../gcc-11.1.0/c++tools/server.cc:284:15: error: ‘exit’ was not declared in
this scope
exit (status);
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void print_version()’:
../../gcc-11.1.0/c++tools/server.cc:299:10: error: ‘exit’ was not declared in
this scope
exit (0);
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘int
maybe_parse_socket(std::string&, module_resolver*)’:
../../gcc-11.1.0/c++tools/server.cc:828:48: error: ‘strtoul’ was not declared
in this scope
unsigned port = strtoul (cptr + 1, &endp, 10);
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void internal_error(const
char*, ...)’:
../../gcc-11.1.0/c++tools/server.cc:200:1: warning: ‘noreturn’ function does
return [enabled by default]
}
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void print_version()’:
../../gcc-11.1.0/c++tools/server.cc:300:1: warning: ‘noreturn’ function does
return [enabled by default]
}
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void print_usage(int)’:
../../gcc-11.1.0/c++tools/server.cc:285:1: warning: ‘noreturn’ function does
return [enabled by default]
}
^
../../gcc-11.1.0/c++tools/server.cc: In function ‘void error(const char*,
...)’:
../../gcc-11.1.0/c++tools/server.cc:234:1: warning: ‘noreturn’ function does
return [enabled by default]
}
^
If the functions from <stdlib.h> are wanted, this file should just include
<stdlib.h> directly rather than relying on C++ headers pulling it in.
This happens for me on uclibc but is reproducible on glibc by locally modifying
GCC 4.8's c++config.h to not define _GLIBCXX_USE_C99.
