[llvm-dev] X86TargetLowering::EmitLoweredProbedAlloca()

[Jonas Paulsson via llvm-dev]

Hi,

I am working on implementing stack clash protection for SystemZ 
(https://reviews.llvm.org/D78717), and have been studying how X86 does 
this. Looking at the implementation of EmitLoweredProbedAlloca(), it 
seems that the 'tail' is not probed. Doesn't this mean that multiple 
small dynamic allocas could result in advancing the stack pointer past 
the guard page?

/Jonas