[Bug 1270789] Re: gcc 4.8: "invalid expression as operand" in aarch64 inline asm

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** Branch linked: lp:debian/gcc-4.8

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Title:
  gcc 4.8: "invalid expression as operand" in aarch64 inline asm

Status in Linaro GCC:
  In Progress
Status in “gcc-4.8” package in Ubuntu:
  New

Bug description:
  
  The attached pre-processed source fails with:

  # aarch64-linux-gnu-gcc -std=gnu99 -fgnu89-inline  -O -Wall -Winline -Wwrite-strings -fmerge-all-constants -frounding-math -g -Wstrict-prototypes malloc.i
  malloc.c: In function ‘__libc_mallopt’:
  malloc.c:4761:16: error: invalid 'asm': invalid expression as operand

  Splitting this inline asm out into a smaller testcase does not seem to
  reproduce the issue. It's possible this is a bug in the source file,
  but it's not clear from gcc's output what the problem is.

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