When verbose is set to 2 or higher, show_instruction()
also display removed instructions. Some of these instructions
can have their associated symbol removed and set to NULL
which will cause a crash with 'test-linearize -vv'.
Fix this by avoiding to dereference symbol's details of
removed instructions.
---
linearize.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/linearize.c b/linearize.c
index 4ebd6d6d8..1bbada887 100644
--- a/linearize.c
+++ b/linearize.c
@@ -319,6 +319,8 @@ const char *show_instruction(struct instruction *insn)
struct symbol *sym = insn->symbol->sym;
buf += sprintf(buf, "%s <- ", show_pseudo(insn->target));
+ if (!insn->bb && !sym)
+ break;
if (sym->bb_target) {
buf += sprintf(buf, ".L%u", sym->bb_target->nr);
break;
--
2.12.0
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