clang compile error in grub.cc

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clang compile error in grub.cc

From:	Hanspeter Niederstrasser
Subject:	clang compile error in grub.cc
Date:	Sat, 23 Feb 2013 00:45:04 +0000 (UTC)
User-agent:	Loom/3.14 (http://gmane.org/)
On OS X 10.7, using Apple-clang 4.2 (the default compiler), the build 
fails withthis error (git head, but also occurs in 2.14, 2.15, & 2.17 
releases):

make[1]: Entering directory `/src/lilypond/lily'
rm -f ./out/grob.dep; DEPENDENCIES_OUTPUT="./out/grob.dep ./out/grob.o"
clang++ -c -Woverloaded-virtual -I/sw/include -I/sw/include/python2.7
-I/sw/include/python2.7 -fno-strict-aliasing -g -g -fwrapv -fwrapv
-I/sw/include -DHAVE_CONFIG_H  -DNDEBUG -I./include -I./out
-I../flower/include -I../flower/./out -I../flower/include  -O2
-finline-functions -g -pipe -I/sw/include -I/sw/include -D_THREAD_SAFE 
-I/sw/include/freetype2 -I/sw/include -I/sw/include/pango-1.0
-I/sw/include/freetype2 -I/sw/include -I/sw/include/glib-2.0
-I/sw/lib/glib-2.0/include -Wno-pmf-conversions  -W -Wall -Wconversion
-o out/grob.o grob.cc
clang: warning: unknown warning option '-Wno-pmf-conversions'; did you
mean '-Wno-int-conversions'?
warning: unknown warning option '-Wno-pmf-conversions'; did you mean
'-Wno-int-conversions'? [-Wunknown-warning-option]
In file included from grob.cc:20:
In file included from ./include/grob.hh:23:
In file included from ./include/box.hh:10:
In file included from ./include/smobs.hh:23:
In file included from ./include/lily-guile.hh:27:
In file included from /sw/include/libguile.h:24:
/sw/include/gmp.h:1791:30: warning: operand of ? changes signedness:
'const int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
  return __GMP_ABS (__gmp_z->_mp_size);
  ~~~~~~            ~~~~~~~~~^~~~~~~~
/sw/include/gmp.h:444:37: note: expanded from macro '__GMP_ABS'
#define __GMP_ABS(x)   ((x) >= 0 ? (x) : -(x))
                                    ^
/sw/include/gmp.h:1791:10: warning: operand of ? changes signedness:
'int' to 'size_t' (aka 'unsigned long') [-Wsign-conversion]
  return __GMP_ABS (__gmp_z->_mp_size);
  ~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/sw/include/gmp.h:444:42: note: expanded from macro '__GMP_ABS'
#define __GMP_ABS(x)   ((x) >= 0 ? (x) : -(x))
                                         ^~~~
In file included from grob.cc:32:
In file included from ./include/music.hh:24:
In file included from ./include/moment.hh:24:
../flower/include/rational.hh:49:41: warning: implicit conversion
changes signedness: 'unsigned long long' to 'I64' (aka 'long long')
[-Wsign-conversion]
  I64 numerator () const { return sign_ * num_; }
                           ~~~~~~ ~~~~~~^~~~~~
../flower/include/rational.hh:49:35: warning: implicit conversion
changes signedness: 'const int' to 'unsigned long long'
[-Wsign-conversion]
  I64 numerator () const { return sign_ * num_; }
                                  ^~~~~ ~
../flower/include/rational.hh:50:37: warning: implicit conversion
changes signedness: 'const U64' (aka 'const unsigned long long') to
'I64' (aka 'long long') [-Wsign-conversion]
  I64 denominator () const { return den_; }
                             ~~~~~~ ^~~~
In file included from grob.cc:38:
In file included from ./include/system.hh:23:
./include/column-x-positions.hh:26:1: warning: 'Column_x_positions'
defined as a struct here but previously declared as a class
[-Wmismatched-tags]
struct Column_x_positions
^
./include/lily-proto.hh:57:1: note: did you mean struct here?
class Column_x_positions;
^~~~~
struct
grob.cc:90:5: error: array initializer must be an initializer list
  : dim_cache_ (s.dim_cache_)
    ^
grob.cc:757:10: warning: indirection of non-volatile null pointer will
be deleted, not trap [-Wnull-dereference]
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^~~~~~~~~~~~~~~~~~
/sw/include/libguile/symbols.h:28:39: note: expanded from macro
'scm_is_symbol'
#define scm_is_symbol(x)            (!SCM_IMP (x) \
                                      ^~~~~~~~~~~
/sw/include/libguile/tags.h:387:27: note: expanded from macro 'SCM_IMP'
#define SCM_IMP(x)              (6 & SCM_UNPACK (x))
                                     ^~~~~~~~~~~~~~
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^~~~~~~~
grob.cc:757:10: note: consider using __builtin_trap() or qualifying
pointer with 'volatile'
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^
/sw/include/libguile/symbols.h:28:39: note: expanded from macro
'scm_is_symbol'
#define scm_is_symbol(x)            (!SCM_IMP (x) \
                                      ^
/sw/include/libguile/tags.h:387:27: note: expanded from macro 'SCM_IMP'
#define SCM_IMP(x)              (6 & SCM_UNPACK (x))
                                     ^
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^
grob.cc:757:10: warning: indirection of non-volatile null pointer will
be deleted, not trap [-Wnull-dereference]
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^~~~~~~~~~~~~~~~~~
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^~~~~~~~~~~~
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^~~~~~~~~~~~~~~~~
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^~~~~~~~~~~~~~~~~~~
note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^~~~~~~~
/sw/include/libguile/tags.h:122:55: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                             ~~~~~~~  ^
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
grob.cc:757:10: note: consider using __builtin_trap() or qualifying
pointer with 'volatile'
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^
note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^
/sw/include/libguile/tags.h:122:55: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                                      ^
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
grob.cc:757:10: warning: indirection of non-volatile null pointer will
be deleted, not trap [-Wnull-dereference]
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^~~~~~~~~~~~~~~~~~
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^~~~~~~~~~~~
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^~~~~~~~~~~~~~~~~
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^~~~~~~~~~~~~~~~~~~
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/gc.h:168:35: note: expanded from macro
'SCM_GC_CELL_WORD'
#define SCM_GC_CELL_WORD(x, n)   (SCM_UNPACK (SCM_GC_CELL_OBJECT ((x),
(n))))
                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^~~~~~~~
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
grob.cc:757:10: note: consider using __builtin_trap() or qualifying
pointer with 'volatile'
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^
note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/gc.h:168:35: note: expanded from macro
'SCM_GC_CELL_WORD'
#define SCM_GC_CELL_WORD(x, n)   (SCM_UNPACK (SCM_GC_CELL_OBJECT ((x),
(n))))
                                  ^
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
grob.cc:757:10: warning: indirection of non-volatile null pointer will
be deleted, not trap [-Wnull-dereference]
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^~~~~~~~~~~~~~~~~~
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^~~~~~~~~~~~
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^~~~~~~~~~~~~~~~~
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^~~~~~~~~~~~~~~~~~~
note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^~~~~~~~
/sw/include/libguile/tags.h:122:60: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                             ~~~~~~~       ^
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
grob.cc:757:10: note: consider using __builtin_trap() or qualifying
pointer with 'volatile'
  return scm_is_symbol (nm) ? ly_symbol2string (nm) : this->class_name
();
         ^
/sw/include/libguile/symbols.h:29:42: note: expanded from macro
'scm_is_symbol'
                                     && (SCM_TYP7 (x) ==
scm_tc7_symbol))
                                         ^
/sw/include/libguile/tags.h:427:38: note: expanded from macro 'SCM_TYP7'
#define SCM_TYP7(x)             (0x7f &        SCM_CELL_TYPE (x))
                                               ^
/sw/include/libguile/gc.h:222:26: note: expanded from macro
'SCM_CELL_TYPE'
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
                         ^
note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0
to see all)
/sw/include/libguile/tags.h:122:45: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                            ^
/sw/include/libguile/tags.h:122:60: note: expanded from macro
'SCM_UNPACK'
#   define SCM_UNPACK(x) ((scm_t_bits) (0? (*(SCM*)0=(x)): x))
                                                           ^
/sw/include/libguile/gc.h:187:42: note: expanded from macro
'SCM_VALIDATE_CELL'
#  define SCM_VALIDATE_CELL(cell, expr) (expr)
                                         ^
11 warnings and 1 error generated.



I got to this point by first using the patch from
http://code.google.com/p/lilypond/issues/detail?id=2088 to get around an earlier
clang failure.
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clang compile error in grub.cc, Hanspeter Niederstrasser <=
- Re: clang compile error in grub.cc, David Kastrup, 2013/02/23
  - Re: clang compile error in grub.cc, Colin Hall, 2013/02/23
    - Re: clang compile error in grub.cc, David Kastrup, 2013/02/23
    - Re: clang compile error in grub.cc, Colin Hall, 2013/02/23
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