diff mbox series

middle-end/114604 - ranger allocates bitmap without initialized obstack

Message ID 20240408094928.BE3C8385841F@sourceware.org
State New
Headers show
Series middle-end/114604 - ranger allocates bitmap without initialized obstack | expand

Commit Message

Richard Biener April 8, 2024, 9:49 a.m. UTC 
The following fixes ranger bitmap allocation when invoked from IPA
context where the global bitmap obstack possibly isn't initialized.
Instead of trying to use one of the ranger obstacks the following
simply initializes the global bitmap obstack around an active ranger.

Bootstrapped and tested on x86_64-unknown-linux-gnu with bitmap_alloc
instrumentation (all ICEs gone, so ranger was the only offender).

OK?

Thanks,
Richard.

	PR middle-end/114604
	* gimple-range.cc (enable_ranger): Initialize the global
	bitmap obstack.
	(disable_ranger): Release it.
---
 gcc/gimple-range.cc | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/gcc/gimple-range.cc b/gcc/gimple-range.cc
index c16b776c1e3..4d3b1ce8588 100644
--- a/gcc/gimple-range.cc
+++ b/gcc/gimple-range.cc
@@ -689,6 +689,8 @@  enable_ranger (struct function *fun, bool use_imm_uses)
 {
   gimple_ranger *r;
 
+  bitmap_obstack_initialize (NULL);
+
   gcc_checking_assert (!fun->x_range_query);
   r = new gimple_ranger (use_imm_uses);
   fun->x_range_query = r;
@@ -705,6 +707,8 @@  disable_ranger (struct function *fun)
   gcc_checking_assert (fun->x_range_query);
   delete fun->x_range_query;
   fun->x_range_query = NULL;
+
+  bitmap_obstack_release (NULL);
 }
 
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