[Bug 1781242] [NEW] as segfault with invalid -march= option

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The GNU assembler segfaults with an invalid -march= option
 
Contact Information = n/a 
 
---uname output---
n/a
 
Machine Type = n/a 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 $ as -march=foo
Segmentation fault
 
Userspace tool common name: as 
 
The userspace tool has the following bit modes: 64 

Userspace rpm: binutils-2.26.1-1ubuntu1~16.04.6

Userspace tool obtained from project website:  na 
 
*Additional Instructions for n/a:
-Attach ltrace and strace of userspace application.


The problem is not critical since usually 'as' is invoked through the gcc driver which itself errors out for wrong -march= options. It will only be a problem if somebody builds a more recent GCC from source and uses an -march= option for a machine not supported by the default binutils.

Please consider integrating the attached patch into 16.04 binutils.

The problem has been fixed in later binutils already. Ubuntu 18.04 does
not appear to be affected.

--> Package has to set corectly by Canonical

** Affects: ubuntu-z-systems
     Importance: Undecided
         Status: New

** Affects: binutils (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bugnameltc-169493 severity-low targetmilestone-inin16044
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as segfault with invalid -march= option
https://bugs.launchpad.net/bugs/1781242
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