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Re: Segmentation fault when compiling m4 1.4.18

From: Eric Blake
Subject: Re: Segmentation fault when compiling m4 1.4.18
Date: Wed, 23 May 2018 16:22:03 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0

On 05/23/2018 03:41 PM, Eve Armstrong wrote:
Hi -

I encounter a segmentation fault when compiling M4.

Platform: Windows 10.0.16299 Build 16299.

Compiler: 'make'.

No, 'make' is not your compiler.

Version of M4: 1.4.18.

   CC       strtod.o
strtod.c: In function 'scale_radix_exp':
strtod.c:90:19: internal compiler error: Segmentation fault
                    if (r < -DBL_MAX / radix)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Makefile:1910: recipe for target 'strtod.o' failed

This is a bug in gcc on your platform, although since the source file was provided by gnulib, it might be nice if gnulib were able to avoid tickling the gcc bug (if we can even figure out what it is about the file that gcc choked on). Have you opened a gcc bug as requested by the compilation failure message? If so, which bug is it?

Also, did you build gcc yourself, or are you using a pre-built gcc? Who provided the pre-built gcc, Microsoft? Have you filed a bug report with them to let them know about their build of the compiler having a bug?

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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