Commitad2ad69

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Tweak compiler version cutoff for no_sanitize("alignment") support.

Buildfarm results show that gcc up through 7.x produces annoyingwarnings for this construct (and, presumably, wouldn't do the rightthing anyway). clang seems okay with the cutoff we have, though.Discussion:https://postgr.es/m/CAPpHfdsne3%3DT%3DfMNU45PtxdhSL_J2PjLTeS8rwKnJzUR4YNd4w%40mail.gmail.comDiscussion:https://postgr.es/m/475514.1612745257%40sss.pgh.pa.us

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Original file line number	Diff line number	Diff line change
`@@ -138,7 +138,7 @@`
`138`	`138`	`* Testing can be done with "-fsanitize=alignment -fsanitize-trap=alignment"`
`139`	`139`	`* on clang, or "-fsanitize=alignment -fno-sanitize-recover=alignment" on gcc.`
`140`	`140`	`*/`
`141`		`-#if__clang_major__ >=7\|\|__GNUC__ >=5`
	`141`	`+#if__clang_major__ >=7\|\|__GNUC__ >=8`
`142`	`142`	`#definepg_attribute_no_sanitize_alignment() __attribute__((no_sanitize("alignment")))`
`143`	`143`	`#else`
`144`	`144`	`#definepg_attribute_no_sanitize_alignment()`

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