zig

commit 395ab474eba31f5bbe95e96cab06ab066384c4af (tree)
parent 6a5e2b713fbaa009bb4ec73cf132a0bab6af6205
Author: kcbanner <kcbanner@gmail.com>
Date:   Sun,  2 Jul 2023 02:57:35 -0400

dwarf: fix logic error in eh_frame_hdry binary search

Diffstat:
M
lib/std/dwarf.zig
 | 
11
+++++++----

1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/lib/std/dwarf.zig b/lib/std/dwarf.zig
@@ -1886,10 +1886,13 @@ pub const ExceptionFrameHeader = struct {
                 .data_rel_base = eh_frame_hdr_ptr,
             }, builtin.cpu.arch.endian()) orelse return badDwarf();
 
-            if (pc >= pc_begin) left = mid;
-            if (pc == pc_begin) break;
-
-            len /= 2;
+            if (pc < pc_begin) {
+                len /= 2;
+            } else {
+                left = mid;
+                if (pc == pc_begin) break;
+                len -= len / 2;
+            }
         }
 
         try stream.seekTo(left * entry_size);