Bug 107972

Summary:	[SKL] 64-bit integer support seems pretty broken
Product:	Mesa	Reporter:	Ian Romanick <idr>
Component:	Drivers/DRI/i965	Assignee:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Status:	RESOLVED NOTOURBUG	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	Test case.

Description Ian Romanick 2018-09-18 08:51:05 UTC

Created attachment 141627 [details]
Test case.

The very simple attached test fails.  GDB sure thinks 0x8000000000000000ll - 0x8000000000000001ll is -1ll. :(

Comment 1 Ian Romanick 2018-09-18 09:22:20 UTC

It seems the problem is that strtoll clamps to INT64_MAX.  This is very frustrating because strtol does not clamp.  It produces the raw bit pattern.

When I send out the test cases where I actually encountered this problem, I will send out a fix to tests/shaders/parser_utils.c.

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