MySQL Bugs: #77049: Some ST_Buffer tests have platform specific results

Bug #77049	Some ST_Buffer tests have platform specific results
Submitted:	15 May 2015 9:20	Modified:	19 May 2015 12:20
Reporter:	Wei Zhao	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: GIS	Severity:	S3 (Non-critical)
Version:	5.7.8	OS:	Any
Assigned to:		CPU Architecture:	Any

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Description:
Some ST_Buffer tests have platform specific results, which are literally different from recorded expected results, but are equivalent to it. The difference is caused by platform specific tiny errors in mathematical computations, which are harmless in practice.

So far the differences were found on osx-10.8, MacOS, and 32bit linux.

How to repeat:
run spatial_analysis_functions_buffer.test on the platforms

Suggested fix:
use --replace_regex to eliminate such literal differences. No source code changes needed.

Fixed in 5.7.8, 5.8.0. Changes for test suite. No changelog entry needed.