* unwind-dw2.c (execute_cfa_program): Use < again.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@48617 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 1 deletions

diff --git a/gcc/unwind-dw2.c b/gcc/unwind-dw2.c
index c2619bd8898..ef9b33bddbf 100644
--- a/gcc/unwind-dw2.c
+++ b/gcc/unwind-dw2.c
@@ -705,7 +705,14 @@ execute_cfa_program (const unsigned char *insn_ptr,
   /* Don't allow remember/restore between CIE and FDE programs.  */
   fs->regs.prev = NULL;
 
-  while (insn_ptr < insn_end && fs->pc <= context->ra)
+  /* The comparison with the return address uses < rather than <= because
+     we are only interested in the effects of code before the call; for a
+     noreturn function, the return address may point to unrelated code with
+     a different stack configuration that we are not interested in.  We
+     assume that the call itself is unwind info-neutral; if not, or if
+     there are delay instructions that adjust the stack, these must be
+     reflected at the point immediately before the call insn.  */
+  while (insn_ptr < insn_end && fs->pc < context->ra)
     {
       unsigned char insn = *insn_ptr++;
       _Unwind_Word reg, utmp;