I am using PCRE in an environment where alloca() is not available. Unfortunately, JIT calls alloca() in sljitNativeX86_common.c, line 446.
As far as I understand, this call makes sure that enough stack space is available. I experimented and found that alloca() is not necessary for all pattern matches. I removed the alloca() call and JIT ran fine on X86_32 but not on X86_64. However, if I provide a custom stack with pcre_assign_jit_stack(), it runs well on both architectures even with alloca() removed. Questions: * Is alloca() really not needed if a custom stack is provided? * Would it be possible to replace alloca() with simple malloc() / free()? Ralf -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev
