diff options
Diffstat (limited to 'gcc/bitmap.c')
| -rw-r--r-- | gcc/bitmap.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/bitmap.c b/gcc/bitmap.c index c2a66f9..97e60de 100644 --- a/gcc/bitmap.c +++ b/gcc/bitmap.c @@ -119,6 +119,7 @@ register_overhead (bitmap b, int amount) /* Global data */ bitmap_element bitmap_zero_bits; /* An element of all zero bits. */ bitmap_obstack bitmap_default_obstack; /* The default bitmap obstack. */ +static int bitmap_default_obstack_depth; static GTY((deletable)) bitmap_element *bitmap_ggc_free; /* Freelist of GC'd elements. */ @@ -302,7 +303,11 @@ void bitmap_obstack_initialize (bitmap_obstack *bit_obstack) { if (!bit_obstack) - bit_obstack = &bitmap_default_obstack; + { + if (bitmap_default_obstack_depth++) + return; + bit_obstack = &bitmap_default_obstack; + } #if !defined(__GNUC__) || (__GNUC__ < 2) #define __alignof__(type) 0 @@ -323,7 +328,14 @@ void bitmap_obstack_release (bitmap_obstack *bit_obstack) { if (!bit_obstack) - bit_obstack = &bitmap_default_obstack; + { + if (--bitmap_default_obstack_depth) + { + gcc_assert (bitmap_default_obstack_depth > 0); + return; + } + bit_obstack = &bitmap_default_obstack; + } bit_obstack->elements = NULL; bit_obstack->heads = NULL; |