[llvm-bugs] [Bug 48092] New: assembly emission fails to escape symbols starting with a digit

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=48092

            Bug ID: 48092
           Summary: assembly emission fails to escape symbols starting
                    with a digit
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: llvm-bugs at lists.llvm.org

Testcase:

$ echo 'int n asm("9") = 0;' | clang -x c - -c -fno-integrated-as
/tmp/--9c2337.s: Assembler messages:
/tmp/--9c2337.s:3: Error: Missing symbol name in directive
/tmp/--9c2337.s:3: Error: unrecognized symbol type "9"
[...]

This works fine without -fno-integrated-as. The problem appears to be that the
symbol name is written directly to the output assembly file:

        .text
        .file   "-"
        .type   9, at object                       # @"9"
        .bss
        .globl  9
        .p2align        2
9:
        .long   0                               # 0x0
        .size   9, 4

... instead of being enclosed in double-quotes.

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