[Mono-bugs] [Bug 81062][Blo] New - Single Float byref - using soft-float - leads to Segfault
bugzilla-daemon at bugzilla.ximian.com
bugzilla-daemon at bugzilla.ximian.com
Tue Mar 6 18:09:05 EST 2007
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Changed by eric_st_onge at hotmail.com.
http://bugzilla.ximian.com/show_bug.cgi?id=81062
--- shadow/81062 2007-03-06 18:09:05.000000000 -0500
+++ shadow/81062.tmp.1733 2007-03-06 18:09:05.000000000 -0500
@@ -0,0 +1,423 @@
+Bug#: 81062
+Product: Mono: Runtime
+Version: 1.2
+OS: GNU/Linux [Other]
+OS Details: MontaVista Linux Consumer Electronics Edition 3.1 Linux armv5tel 2.4.20 mvlcee31 mainstone pxa27x
+Status: NEW
+Resolution:
+Severity:
+Priority: Blocker
+Component: JIT
+AssignedTo: lupus at ximian.com
+ReportedBy: eric_st_onge at hotmail.com
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL:
+Cc:
+Summary: Single Float byref - using soft-float - leads to Segfault
+
+Please fill in this template when reporting a bug, unless you know what
+you are doing.
+Description of Problem:
+Using 2007 Feb 06 HEAD SVN version.
+Passing byref a Single Float (32 bits) leads systematically to segfault
+on ARM softfloat using the following code.
+
+Initial troubleshooting lead to beleive that mono_fload_r4 receives a
+null pointer at some point. Note that complixier applications make use of
+mono_fload_r4 without problems.
+
+Steps to reproduce the problem:
+1.
+ static void Main(string[] args)
+ {
+ float r4 = 1.11111F;
+ PassingR4(ref r4);
+ }
+ static void PassingR4(ref float r4)
+ {
+ r4 = r4 + 12.34567F;
+ }
+2. Execute on mono
+3. Segfault
+
+Actual Results:
+
+# MONO_SHARED_DIR=/ram
+MONO_PATH=/mmc/mmca1/mono/bin /mmc/mmca1/mono/bin/mono --trace=all
+STIND_Test.exe
+ENTER: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)() ip: (nil)
+. ENTER: System.OutOfMemoryException:.ctor (string)() ip: (nil)
+. . ENTER: System.SystemException:.ctor (string)() ip: (nil)
+. . . ENTER: System.Exception:.ctor (string)() ip: (nil)
+. . . LEAVE: System.Exception:.ctor (string)
+. . . ENTER: System.Exception:set_HResult (int)() ip: (nil)
+. . . LEAVE: System.Exception:set_HResult (int)
+. . LEAVE: System.SystemException:.ctor (string)
+. . ENTER: System.Exception:set_HResult (int)() ip: (nil)
+. . LEAVE: System.Exception:set_HResult (int)
+. LEAVE: System.OutOfMemoryException:.ctor (string)
+LEAVE: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)[OBJECT:(nil)]
+ENTER: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)() ip: (nil)
+. ENTER: System.NullReferenceException:.ctor (string)() ip: (nil)
+. . ENTER: System.SystemException:.ctor (string)() ip: (nil)
+. . . ENTER: System.Exception:.ctor (string)() ip: (nil)
+. . . LEAVE: System.Exception:.ctor (string)
+. . . ENTER: System.Exception:set_HResult (int)() ip: (nil)
+. . . LEAVE: System.Exception:set_HResult (int)
+. . LEAVE: System.SystemException:.ctor (string)
+. LEAVE: System.NullReferenceException:.ctor (string)
+LEAVE: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)[OBJECT:(nil)]
+ENTER: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)() ip: (nil)
+. ENTER: System.StackOverflowException:.ctor (string)() ip: (nil)
+. . ENTER: System.SystemException:.ctor (string)() ip: (nil)
+. . . ENTER: System.Exception:.ctor (string)() ip: (nil)
+. . . LEAVE: System.Exception:.ctor (string)
+. . . ENTER: System.Exception:set_HResult (int)() ip: (nil)
+. . . LEAVE: System.Exception:set_HResult (int)
+. . LEAVE: System.SystemException:.ctor (string)
+. LEAVE: System.StackOverflowException:.ctor (string)
+LEAVE: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+(object,intptr,intptr,intptr)[OBJECT:(nil)]
+** Message: handle_store_float:2677
+** Message: mono_emit_call_args:2454, i=0, sig->hasthis=0
+ENTER: (wrapper runtime-invoke) System.Object:runtime_invoke_void_string
+[] (object,intptr,intptr,intptr)() ip: (nil)
+. ENTER: STIND_Test.Program:Main (string[])() ip: (nil)
+. . ENTER: (wrapper managed-to-native)
+System.Object:__icall_wrapper_mono_fstore_r4 (double,intptr)() ip: (nil)
+** Message: mono_fstore_r4:595, val=1.111110, ptr=befffc20
+
+. . LEAVE: (wrapper managed-to-native)
+System.Object:__icall_wrapper_mono_fstore_r4 (double,intptr)
+. . ENTER: (wrapper managed-to-native)
+System.Object:__icall_wrapper_mono_fload_r4_arg (double)() ip: (nil)
+** Message: mono_fload_r4_arg:602, val=0.000000, v=0.000000, *(guint32*)
+&v=0
+
+. . LEAVE: (wrapper managed-to-native)
+System.Object:__icall_wrapper_mono_fload_r4_arg (double)result=0
+** Message: handle_load_float:2687
+** Message: handle_store_float:2677
+. . ENTER: STIND_Test.Program:PassingR4 (single&)() ip: (nil)
+. . . ENTER: (wrapper managed-to-native)
+System.Object:__icall_wrapper_mono_fload_r4 (intptr)() ip: (nil)
+** Message: mono_fload_r4:589, ptr=0
+
+Stacktrace:
+
+ at (wrapper managed-to-native)
+System.Object.__icall_wrapper_mono_fload_r4 (intptr) <0xffffffff>
+ at STIND_Test.Program.PassingR4 (single&) <0x00038>
+ at STIND_Test.Program.Main (string[]) <0x00067>
+ at (wrapper runtime-invoke) System.Object.runtime_invoke_void_string[]
+(object,intptr,intptr,intptr) <0xffffffff>
+
+Native stacktrace:
+
+ /mmc/mmca1/mono/bin/mono [0xf06f8]
+ [0x409e3754]
+ [0x409e3754]
+ [0x409e3754]
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+
+=================================================================
+Got a SIGSEGV while executing native code. This usually indicates
+a fatal error in the mono runtime or one of the native libraries
+used by your application.
+=================================================================
+
+Aborted
+#
+
+Expected Results:
+
+
+How often does this happen?
+systematicaly.
+
+Additional Information:
+
+GLIB 2.12.9
+
+Reading specs from /home/eric//sdks//opt/toolchain-
+3.3.1/devkit/arm/iwmmxt_le/bin/../lib/gcc-lib/armv5tel-hardhat-
+linux/3.3.1/specs
+Configured with: ../configure --host=i686-pc-linux-gnu --target=armv5tel-
+hardhat-linux --prefix=/opt/montavista/cee/devkit/arm/iwmmxt_le --exec-
+prefix=/opt/montavista/cee/devkit/arm/iwmmxt_le --
+bindir=/opt/montavista/cee/devkit/arm/iwmmxt_le/bin --
+sbindir=/opt/montavista/cee/devkit/arm/iwmmxt_le/sbin --
+sysconfdir=/opt/montavista/cee/devkit/arm/iwmmxt_le/etc --
+datadir=/opt/montavista/cee/devkit/arm/iwmmxt_le/share --
+includedir=/opt/montavista/cee/devkit/arm/iwmmxt_le/include --
+libdir=/opt/montavista/cee/devkit/arm/iwmmxt_le/lib --
+libexecdir=/opt/montavista/cee/devkit/arm/iwmmxt_le/libexec --
+localstatedir=/opt/montavista/cee/devkit/arm/iwmmxt_le/var --
+sharedstatedir=/opt/montavista/cee/devkit/arm/iwmmxt_le/share --
+mandir=/opt/montavista/cee/devkit/arm/iwmmxt_le/man --
+infodir=/opt/montavista/cee/devkit/arm/iwmmxt_le/info --program-transform-
+name=s,^,iwmmxt_le-, --enable-cross --with-
+sysroot=/opt/montavista/cee/devkit/arm/iwmmxt_le/target --enable-shared --
+enable-languages=c,c++ --enable-__cxa_atexit --enable-threads=posix --
+disable-multilib --with-gxx-include-
+dir='$'{gcc_tooldir}/../target/usr/include/c++/3.3.1 --with-float=soft --
+with-cpu=iwmmxt --with-arch=iwmmxt --with-tune=iwmmxt --with-fpu=vfp
+Thread model: posix
+gcc version 3.3.1 (MontaVista 3.3.1-7.0.23.custom 2005-05-17)
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