Crash on Windows, Exception code: 0xc0000005

[TacoSteemers]

I installed using the executable from the website.

Whenever I run rustc, with or without a source file as argument, the crash with "Exception code: 0xc0000005" occurs.

Here is a copy+paste of what I found in the Windows Event Viewer.

Using gdb I get the following:

Program received signal SIGSEGV, Segmentation fault.
0x6fc5badb in libstdc++-6!_ZN9__gnu_cxx18__exchange_and_addEPVii ()
    from C:\MinGW\bin\libstdc++-6.dll

[TacoSteemers]

I didn't add the backtrace, here it is:

#0  0x6fc5badb in libstdc++-6!_ZN9__gnu_cxx18__exchange_and_addEPVii ()
   from C:\MinGW\bin\libstdc++-6.dll
#1  0x6fc61052 in libstdc++-6!_ZN9__gnu_cxx9free_list8_M_clearEv ()
   from C:\MinGW\bin\libstdc++-6.dll
#2  0x6fc89eb2 in libstdc++-6!_ZNSs4_Rep10_M_disposeERKSaIcE ()
   from C:\MinGW\bin\libstdc++-6.dll
#3  0x6fc8acb4 in libstdc++-6!_ZNSs6assignERKSs () from C:\MinGW\bin\libstdc++-6.dll
#4  0x01222a5a in _fu1664___ZNSs4_Rep20_S_empty_rep_storageE ()
   from C:\Program Files (x86)\Rust\bin\rustllvm.dll
#5  0x0180654c in (anonymous namespace)::InfoOutputFilename ()
   from C:\Program Files (x86)\Rust\bin\rustllvm.dll
#6  0x01ac2e20 in ?? ()
#7  0x00891167 in DllMainCRTStartup@12 () from C:\Program Files (x86)\Rust\bin\rustllvm.dll
#8  0x76fa9950 in ntdll!RtlpNtMakeTemporaryKey () from C:\Windows\system32\ntdll.dll
#9  0x00890000 in ?? ()
#10 0x76fad8c9 in ntdll!RtlEmptyAtomTable () from C:\Windows\system32\ntdll.dll
#11 0x008910c0 in __dll_exit () from C:\Program Files (x86)\Rust\bin\rustllvm.dll
#12 0x76fb681c in ntdll!RtlStatMemoryStream () from C:\Windows\system32\ntdll.dll
#13 0x0028fd24 in ?? ()
#14 0x76fb52d6 in ntdll!TpCaptureCaller () from C:\Windows\system32\ntdll.dll
#15 0x0028fd24 in ?? ()
#16 0x76fa9e79 in ntdll!RtlpNtSetValueKey () from C:\Windows\system32\ntdll.dll
#17 0x0028fd24 in ?? ()
#18 0x00000000 in ?? ()

[pnkfelix]

@TacoSteemers what version of windows is this? XP? Windows 7? Windows 8? (I'll need to set up a machine with it to replicate the bug.)

[TacoSteemers]

It's Windows 7.

[bblum]

nominating well-covered

[pnkfelix]

(assigning to self as reminder to attempt to reproduce. other devs can work-steal if idle.)

[vadimcn]

I'm guessing you are running rustc after a fresh mingw install?
By default mingw installs gcc 4.7, while Rust is still compiled with gcc 4.5. This causes problems because 4.7's libstdc++-6.dll is incompatible with that of gcc 4.5 (some calling convention change as I understand).
You will need to downgrade gcc back to 4.5, as described here:

mingw-get upgrade "gcc<4.6"
mingw-get upgrade "g++<4.6"

Also, you may need to downgrade your pthread library:

mingw-get upgrade "libpthread=2.8.0-3"

[vadimcn]

Also #5712

[graydon]

just a bug, removing milestone/nomination.

[thadguidry]

@vadimcn Have you tested and are fairly sure that libpthread needs to be at 2.8.0-3 when using gcc 4.5 ? If so, then I can add that info to the "getting started guide".

[vadimcn]

@thadguidry Pretty sure, but feel free to verify independently.

[thadguidry]

I still get this trying to compile with a 4.8.1 gcc toolchain on Windows 7. Output right before rustc.exe crashes is here: http://pastebin.mozilla.org/3022119

[vadimcn]

@thadguidry: You'll need to copy libgcc_s_dw2-1.dll and libstdc++-6.dll from %mingw%\bin into %rust%\build\i686-pc-mingw32\stage0\bin

[thadguidry]

@vadimcn @brson Rather than copying, why don't we try to make it easier for everyone, and find and locate the needed dll's by somehow also adding %mingw%\bin as a default search path , perhaps with CFG_LIBDIR ?

configure: CFG_C_COMPILER := gcc
configure: CFG_LIBDIR := bin