[llvm-bugs] [Bug 35218] New: llvm-mc: assertion failure if an .align argument is extremely large

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35218

            Bug ID: 35218
           Summary: llvm-mc: assertion failure if an .align argument is
                    extremely large
           Product: libraries
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: MC
          Assignee: unassignedbugs at nondot.org
          Reporter: ruiu at google.com
                CC: llvm-bugs at lists.llvm.org

$ echo '.align 0x100000000' | llvm-mc -filetype=obj -triple=x86_64-pc-linux -

llvm-mc: /ssd/llvm-project/llvm/include/llvm/Support/MathExtras.h:678: uint64_t
llvm::alignTo(uint64_t, uint64_t, uint64_t): Assertion `Align != 0u && "Align
can't be 0."' failed.
#0 0x00000000014a8fd9 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/ssd/llvm-project/llvm/lib/Support/Unix/Signals.inc:398:11
#1 0x00000000014a9189 PrintStackTraceSignalHandler(void*)
/ssd/llvm-project/llvm/lib/Support/Unix/Signals.inc:462:1
#2 0x00000000014a7743 llvm::sys::RunSignalHandlers()
/ssd/llvm-project/llvm/lib/Support/Signals.cpp:0:5
#3 0x00000000014a94e4 SignalHandler(int)
/ssd/llvm-project/llvm/lib/Support/Unix/Signals.inc:252:1
#4 0x00007ffff7bcc330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#5 0x00007ffff67bbc37 gsignal
/build/eglibc-SvCtMH/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#6 0x00007ffff67bf028 abort
/build/eglibc-SvCtMH/eglibc-2.19/stdlib/abort.c:91:0
#7 0x00007ffff67b4bf6 __assert_fail_base
/build/eglibc-SvCtMH/eglibc-2.19/assert/assert.c:92:0
#8 0x00007ffff67b4ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#9 0x0000000000d3eac3 llvm::alignTo(unsigned long, unsigned long, unsigned
long) /ssd/llvm-project/llvm/include/llvm/Support/MathExtras.h:679:11
#10 0x0000000000e74e51 llvm::OffsetToAlignment(unsigned long, unsigned long)
/ssd/llvm-project/llvm/include/llvm/Support/MathExtras.h:720:32
#11 0x00000000012a6ed0 llvm::MCAssembler::computeFragmentSize(llvm::MCAsmLayout
const&, llvm::MCFragment const&) const
/ssd/llvm-project/llvm/lib/MC/MCAssembler.cpp:299:21
#12 0x00000000012a9631 llvm::MCAssembler::finishLayout(llvm::MCAsmLayout&)
/ssd/llvm-project/llvm/lib/MC/MCAssembler.cpp:985:5
#13 0x00000000012a8df6 llvm::MCAssembler::layout(llvm::MCAsmLayout&)
/ssd/llvm-project/llvm/lib/MC/MCAssembler.cpp:0:3
#14 0x00000000012a96c3 llvm::MCAssembler::Finish()
/ssd/llvm-project/llvm/lib/MC/MCAssembler.cpp:769:21
#15 0x000000000130bdc3 llvm::MCObjectStreamer::FinishImpl()
/ssd/llvm-project/llvm/lib/MC/MCObjectStreamer.cpp:638:1
#16 0x00000000012e66e7 llvm::MCELFStreamer::FinishImpl()
/ssd/llvm-project/llvm/lib/MC/MCELFStreamer.cpp:628:1
#17 0x000000000131733f llvm::MCStreamer::Finish()
/ssd/llvm-project/llvm/lib/MC/MCStreamer.cpp:818:1
#18 0x000000000135458e (anonymous namespace)::AsmParser::Run(bool, bool)
/ssd/llvm-project/llvm/lib/MC/MCParser/AsmParser.cpp:0:9
#19 0x0000000000c49f57 AssembleInput(char const*, llvm::Target const*,
llvm::SourceMgr&, llvm::MCContext&, llvm::MCStreamer&, llvm::MCAsmInfo&,
llvm::MCSubtargetInfo&, llvm::MCInstrInfo&, llvm::MCTargetOptions&)
/ssd/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp:426:13
#20 0x0000000000c48aec main
/ssd/llvm-project/llvm/tools/llvm-mc/llvm-mc.cpp:610:9
#21 0x00007ffff67a6f45 __libc_start_main
/build/eglibc-SvCtMH/eglibc-2.19/csu/libc-start.c:321:0
#22 0x0000000000c47029 _start (bin/llvm-mc+0xc47029)
Stack dump:
0.      Program arguments: bin/llvm-mc -filetype=obj -triple=x86_64-pc-linux - 
Aborted (core dumped)

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