Package: clang-6.0
Version: 1:6.0.1-2
Severity: normal
Clang fails to compile the following snippet on (at least) amd64 and i386
while gcc builds it:
#include <stdatomic.h>
void increment(atomic_size_t *arg) {
atomic_fetch_add(arg, 1);
}
Maybe something is fishy with the include paths, but it's not clear to me.
| [sid-amd64-sbuild] weasel@build-x86-07:~$ clang -v -c x.c
| clang version 6.0.1-2 (tags/RELEASE_601/final)
| Target: x86_64-pc-linux-gnu
| Thread model: posix
| InstalledDir: /usr/bin
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
| Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
| Candidate multilib: .;@m64
| Selected multilib: .;@m64
| "/usr/lib/llvm-6.0/bin/clang" -cc1 -triple x86_64-pc-linux-gnu -emit-obj
-mrelax-all -disable-free -disable-llvm-verifier -discard-value-names
-main-file-name x.c -mrelocation-model static -mthread-model posix
-mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
-munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info
-debugger-tuning=gdb -v -coverage-notes-file /home/weasel/x.gcno -resource-dir
/usr/lib/llvm-6.0/lib/clang/6.0.1 -internal-isystem /usr/local/include
-internal-isystem /usr/lib/llvm-6.0/lib/clang/6.0.1/include
-internal-externc-isystem /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdebug-compilation-dir /home/weasel -ferror-limit 19 -fmessage-length 141
-fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -o x.o -x c x.c
| clang -cc1 version 6.0.1 based upon LLVM 6.0.1 default target
x86_64-pc-linux-gnu
| ignoring nonexistent directory "/include"
| #include "..." search starts here:
| #include <...> search starts here:
| /usr/local/include
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include
| /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/include
| /usr/include/x86_64-linux-gnu
| /usr/include
| End of search list.
| x.c:3:3: error: address argument to atomic operation must be a pointer to
integer or pointer ('atomic_size_t *'
| (aka '_Atomic(unsigned long) *') invalid)
| atomic_fetch_add(arg, 1);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0/include/stdatomic.h:192:36: note:
expanded from macro 'atomic_fetch_add'
| #define atomic_fetch_add(PTR, VAL) __atomic_fetch_add ((PTR), (VAL), \
| ^ ~~~~~
| 1 error generated.
| [sid-amd64-sbuild] weasel@build-x86-07:~$ echo $?
| 1
Note that it builds with -nostdinc (albeit with warnings):
| [sid-amd64-sbuild] weasel@build-x86-07:~$ clang -v -nostdinc
-I/usr/lib/llvm-6.0/lib/clang/6.0.1/include -c x.c
| clang version 6.0.1-2 (tags/RELEASE_601/final)
| Target: x86_64-pc-linux-gnu
| Thread model: posix
| InstalledDir: /usr/bin
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
| Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/8
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
| Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
| Selected GCC installation: /usr/bin/../lib/gcc/x86_64-linux-gnu/7.3.0
| Candidate multilib: .;@m64
| Selected multilib: .;@m64
| "/usr/lib/llvm-6.0/bin/clang" -cc1 -triple x86_64-pc-linux-gnu -emit-obj
-mrelax-all -disable-free -disable-llvm-verifier -discard-value-names
-main-file-name x.c -mrelocation-model static -mthread-model posix
-mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
-munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info
-debugger-tuning=gdb -v -coverage-notes-file /home/weasel/x.gcno
-nostdsysteminc -nobuiltininc -resource-dir /usr/lib/llvm-6.0/lib/clang/6.0.1
-I /usr/lib/llvm-6.0/lib/clang/6.0.1/include -fdebug-compilation-dir
/home/weasel -ferror-limit 19 -fmessage-length 141 -fobjc-runtime=gcc
-fdiagnostics-show-option -fcolor-diagnostics -o x.o -x c x.c
| clang -cc1 version 6.0.1 based upon LLVM 6.0.1 default target
x86_64-pc-linux-gnu
| #include "..." search starts here:
| #include <...> search starts here:
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include
| End of search list.
| In file included from x.c:1:
| In file included from
/usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdatomic.h:35:
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:186:10: warning:
'__int_least32_t' macro redefined [-Wmacro-redefined]
| # define __int_least32_t int32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:112:10: note: previous
definition is here
| # define __int_least32_t int64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:187:10: warning:
'__uint_least32_t' macro redefined [-Wmacro-redefined]
| # define __uint_least32_t uint32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:113:10: note: previous
definition is here
| # define __uint_least32_t uint64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:188:10: warning:
'__int_least16_t' macro redefined [-Wmacro-redefined]
| # define __int_least16_t int32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:114:10: note: previous
definition is here
| # define __int_least16_t int64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:189:10: warning:
'__uint_least16_t' macro redefined [-Wmacro-redefined]
| # define __uint_least16_t uint32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:115:10: note: previous
definition is here
| # define __uint_least16_t uint64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:190:10: warning:
'__int_least8_t' macro redefined [-Wmacro-redefined]
| # define __int_least8_t int32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:116:10: note: previous
definition is here
| # define __int_least8_t int64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:191:10: warning:
'__uint_least8_t' macro redefined [-Wmacro-redefined]
| # define __uint_least8_t uint32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:117:10: note: previous
definition is here
| # define __uint_least8_t uint64_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:219:10: warning:
'__int_least16_t' macro redefined [-Wmacro-redefined]
| # define __int_least16_t int16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:188:10: note: previous
definition is here
| # define __int_least16_t int32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:220:10: warning:
'__uint_least16_t' macro redefined [-Wmacro-redefined]
| # define __uint_least16_t uint16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:189:10: note: previous
definition is here
| # define __uint_least16_t uint32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:221:10: warning:
'__int_least8_t' macro redefined [-Wmacro-redefined]
| # define __int_least8_t int16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:190:10: note: previous
definition is here
| # define __int_least8_t int32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:222:10: warning:
'__uint_least8_t' macro redefined [-Wmacro-redefined]
| # define __uint_least8_t uint16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:191:10: note: previous
definition is here
| # define __uint_least8_t uint32_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:238:10: warning:
'__int_least8_t' macro redefined [-Wmacro-redefined]
| # define __int_least8_t int8_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:221:10: note: previous
definition is here
| # define __int_least8_t int16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:239:10: warning:
'__uint_least8_t' macro redefined [-Wmacro-redefined]
| # define __uint_least8_t uint8_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:222:10: note: previous
definition is here
| # define __uint_least8_t uint16_t
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:376:11: warning:
'__int32_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int32_c_suffix __INT32_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:301:11: note: previous
definition is here
| # define __int32_c_suffix __INT64_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:377:11: warning:
'__int16_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int16_c_suffix __INT32_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:302:11: note: previous
definition is here
| # define __int16_c_suffix __INT64_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:378:11: warning:
'__int8_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int8_c_suffix __INT32_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:303:12: note: previous
definition is here
| # define __int8_c_suffix __INT64_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:414:11: warning:
'__int16_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int16_c_suffix __INT16_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:377:11: note: previous
definition is here
| # define __int16_c_suffix __INT32_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:415:11: warning:
'__int8_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int8_c_suffix __INT16_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:378:11: note: previous
definition is here
| # define __int8_c_suffix __INT32_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:435:11: warning:
'__int8_c_suffix' macro redefined [-Wmacro-redefined]
| # define __int8_c_suffix __INT8_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:415:11: note: previous
definition is here
| # define __int8_c_suffix __INT16_C_SUFFIX__
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:569:10: warning:
'__INT_LEAST32_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST32_MIN INT32_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:478:10: note: previous
definition is here
| # define __INT_LEAST32_MIN INT64_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:570:10: warning:
'__INT_LEAST32_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST32_MAX INT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:479:10: note: previous
definition is here
| # define __INT_LEAST32_MAX INT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:571:10: warning:
'__UINT_LEAST32_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST32_MAX UINT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:480:10: note: previous
definition is here
| # define __UINT_LEAST32_MAX UINT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:572:10: warning:
'__INT_LEAST16_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST16_MIN INT32_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:481:10: note: previous
definition is here
| # define __INT_LEAST16_MIN INT64_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:573:10: warning:
'__INT_LEAST16_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST16_MAX INT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:482:10: note: previous
definition is here
| # define __INT_LEAST16_MAX INT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:574:10: warning:
'__UINT_LEAST16_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST16_MAX UINT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:483:10: note: previous
definition is here
| # define __UINT_LEAST16_MAX UINT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:575:10: warning:
'__INT_LEAST8_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MIN INT32_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:484:10: note: previous
definition is here
| # define __INT_LEAST8_MIN INT64_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:576:10: warning:
'__INT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MAX INT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:485:10: note: previous
definition is here
| # define __INT_LEAST8_MAX INT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:577:10: warning:
'__UINT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST8_MAX UINT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:486:10: note: previous
definition is here
| # define __UINT_LEAST8_MAX UINT64_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:613:10: warning:
'__INT_LEAST16_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST16_MIN INT16_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:572:10: note: previous
definition is here
| # define __INT_LEAST16_MIN INT32_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:614:10: warning:
'__INT_LEAST16_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST16_MAX INT16_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:573:10: note: previous
definition is here
| # define __INT_LEAST16_MAX INT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:615:10: warning:
'__UINT_LEAST16_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST16_MAX UINT16_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:574:10: note: previous
definition is here
| # define __UINT_LEAST16_MAX UINT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:616:10: warning:
'__INT_LEAST8_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MIN INT16_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:575:10: note: previous
definition is here
| # define __INT_LEAST8_MIN INT32_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:617:10: warning:
'__INT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MAX INT16_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:576:10: note: previous
definition is here
| # define __INT_LEAST8_MAX INT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:618:10: warning:
'__UINT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST8_MAX UINT16_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:577:10: note: previous
definition is here
| # define __UINT_LEAST8_MAX UINT32_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:635:10: warning:
'__INT_LEAST8_MIN' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MIN INT8_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:616:10: note: previous
definition is here
| # define __INT_LEAST8_MIN INT16_MIN
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:636:10: warning:
'__INT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __INT_LEAST8_MAX INT8_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:617:10: note: previous
definition is here
| # define __INT_LEAST8_MAX INT16_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:637:10: warning:
'__UINT_LEAST8_MAX' macro redefined [-Wmacro-redefined]
| # define __UINT_LEAST8_MAX UINT8_MAX
| ^
| /usr/lib/llvm-6.0/lib/clang/6.0.1/include/stdint.h:618:10: note: previous
definition is here
| # define __UINT_LEAST8_MAX UINT16_MAX
| ^
| 36 warnings generated.
| [sid-amd64-sbuild] weasel@build-x86-07:~$ echo $?
| 0
cf. tor#26779: atomic_init() and friends failing on clang
https://bugs.torproject.org/26779
--
| .''`. ** Debian **
Peter Palfrader | : :' : The universal
https://www.palfrader.org/ | `. `' Operating System
| `- https://www.debian.org/
