Hi Xio-Yong, I see. Can you try SVN 856, please? Thanks, Jürgen On 01/18/2017 04:57 PM, Xiao-Yong Jin
wrote:
Yes, it remains an error. The number 255 as I understand comes from src/SymbolTable.hh:235:class SystemSymTab : public SymbolTableBase<SystemName, 256 - 1>On Jan 18, 2017, at 9:41 AM, Juergen Sauermann <juergen.sauerm...@t-online.de> wrote: Hi Xiao-Yong, I have simplified the loop a little hoping that gcc will get less confused. *SVN 854*. If the warning remains then it is definitely bogus. Also, I can't really see why iteration 255 should behave differently than all the others. /// Jürgen On 01/17/2017 05:10 AM, Xiao-Yong Jin wrote:In addition, there is one more warning/error. g++ -DHAVE_CONFIG_H -I. -I.. -Werror -Wall -I sql -I/sandbox/pkg/lib/include -I/sandbox/pkg/include -rdynamic -Wno-maybe-uninitialized -march=native -O3 -pipe -I/sandbox/pkg/include -MT apl-SymbolTable.o -MD -MP -MF .deps/apl-SymbolTable.Tpo -c -o apl-SymbolTable.o `test -f 'SymbolTable.cc' || echo './'`SymbolTable.cc SymbolTable.cc: In member function ‘void SystemSymTab::clear(std::ostream&)’: SymbolTable.cc:499:37: error: iteration 255 invokes undefined behavior [-Werror=aggressive-loop-optimizations] SystemName * sym = symbol_table[hash]; ^ In file included from Assert.hh:24:0, from Simple_string.hh:33, from CDR_string.hh:24, from CDR.hh:24, from SymbolTable.cc:24: Common.hh:106:44: note: within this loop #define loop(v, e) for (ShapeItem v = 0; v < ShapeItem(e); ++v) SymbolTable.cc:493:4: note: in expansion of macro ‘loop’ loop(hash, SYMBOL_HASH_TABLE_SIZE) clear_slot(out, hash); ^~~~ cc1plus: all warnings being treated as errorsOn Jan 16, 2017, at 8:05 PM, Xiao-Yong Jin <jinxiaoy...@gmail.com> wrote: Not sure if it's another gcc unrolling bug. Using gcc 6.2.0 g++ -DHAVE_CONFIG_H -I. -I.. -Werror -Wall -I sql -I/sandbox/pkg/lib/include -I/sandbox/pkg/include -rdynamic -march=native -O3 -pipe -I/sandbox/pkg/include -MT apl-Bif_F12_SORT.o -MD -MP -MF .deps/ap l-Bif_F12_SORT.Tpo -c -o apl-Bif_F12_SORT.o `test -f 'Bif_F12_SORT.cc' || echo './'`Bif_F12_SORT.cc In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh: In constructor ‘CollatingCache::CollatingCache(const Value&, const Cell*, ShapeItem)’: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[7]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[7]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[6]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[6]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[5]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[5]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[4]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[4]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[3]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[3]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[2]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[2]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ In file included from PrintBuffer.hh:28:0, from Cell.hh:27, from Value.hh:30, from Value.icc:24, from NamedObject.hh:25, from Function.hh:27, from PrimitiveFunction.hh:25, from Bif_F12_SORT.hh:25, from Bif_F12_SORT.cc:22: Shape.hh:143:43: error: ‘*((void*)(& entry)+8).Shape::rho[1]’ may be used uninitialized in this function [-Werror=maybe-uninitialized] rho[rho_rho++] = len; volume *= len; } ^~~ Bif_F12_SORT.cc:56:36: note: ‘*((void*)(& entry)+8).Shape::rho[1]’ was declared here const CollatingCacheEntry entry(uni, A.get_shape()); ^~~~~ cc1plus: all warnings being treated as errors make[3]: *** [apl-Bif_F12_SORT.o] Error 1 |
- [Bug-apl] svn r849 fails to compile with gcc 6.2 -O3 Xiao-Yong Jin
- Re: [Bug-apl] svn r849 fails to compile with gcc 6.... Xiao-Yong Jin
- Re: [Bug-apl] svn r849 fails to compile with gc... Christian Robert
- Re: [Bug-apl] svn r849 fails to compile with gc... Juergen Sauermann
- Re: [Bug-apl] svn r849 fails to compile wit... Xiao-Yong Jin
- Re: [Bug-apl] svn r849 fails to compile... Juergen Sauermann
- Re: [Bug-apl] svn r849 fails to compile with gcc 6.... Juergen Sauermann