[LLVMbugs] [Bug 5452] New: cc1: error in backend: Stack realignment in presense of dynamic allocas is not supported

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5452

           Summary: cc1: error in backend: Stack realignment in presense of
                    dynamic allocas is not supported
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: timo.lindfors at iki.fi
                CC: llvmbugs at cs.uiuc.edu


Steps to reproduce:
1) Configure llvm-gcc-4.2 with

../llvm-gcc-4.2/configure --prefix=$HOME/install --program-prefix=llvm-
--enable-llvm=$HOME/scm/llvm --enable-languages=c,c++
--target=i686-pc-linux-gnu --with-tune=generic --with-arch=pentium4

2) run make -j3

Expected results:
2) llvm-gcc-4.2 builds from source

Actual results:
2) build fails with

/home/lindi/scm/llvm-gcc-4.2-obj/./prev-gcc/xgcc
-B/home/lindi/scm/llvm-gcc-4.2-obj/./prev-gcc/
-B/home/lindi/install/i686-pc-linux-gnu/bin/ -c   -O2 -g -fomit-frame-pointer
-DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-Wold-style-definition -Wmissing-format-attribute    -DHAVE_CONFIG_H -I. -I.
-I../../llvm-gcc-4.2/gcc -I../../llvm-gcc-4.2/gcc/.
-I../../llvm-gcc-4.2/gcc/../include -I../../llvm-gcc-4.2/gcc/../libcpp/include 
-I../../llvm-gcc-4.2/gcc/../libdecnumber -I../libdecnumber
-I/home/lindi/scm/llvm/include -DENABLE_LLVM -I/home/lindi/scm/llvm/include
-I/home/lindi/scm/llvm/include  -D_DEBUG -D_GNU_SOURCE -D__STDC_LIMIT_MACROS
-D__STDC_CONSTANT_MACROS   ../../llvm-gcc-4.2/gcc/c-errors.c -o c-errors.o
cc1: error in backend: Stack realignment in presense of dynamic allocas is not
supported

More info:
1) distro is debian stable
2) architecture is x86
3) llvm-gcc-4.2 revision is 86487
4) llvm revision is 86681
5) This was probably made visible by http://llvm.org/bugs/show_bug.cgi?id=2962
?


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