From 84a1d2371c026490f8dc6de93fd63802bfc512eb Mon Sep 17 00:00:00 2001 From: Nick Lewycky Date: Wed, 29 Feb 2012 08:26:44 +0000 Subject: [PATCH] Where the alloca'd space actually lives in ram is undefined, and attempting to pin it down is undefined behaviour. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151710 91177308-0d34-0410-b5e6-96231b3b80d8 --- docs/LangRef.html | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/docs/LangRef.html b/docs/LangRef.html index 5d3c7458c2d..29ac260fd0e 100644 --- a/docs/LangRef.html +++ b/docs/LangRef.html @@ -4859,7 +4859,12 @@ IfUnequal: variables that must have an address available. When the function returns (either with the ret or resume instructions), the memory is - reclaimed. Allocating zero bytes is legal, but the result is undefined.

+ reclaimed. Allocating zero bytes is legal, but the result is undefined. + The order in which memory is allocated (ie., which way the stack grows) is + not specified, and relational comparisons involving 'alloca's are + undefined.

+ +

Example:
-- 
2.34.1