Bug 1801248 - Fix up pointer arithmetic. r=gfx-reviewers,lsalzman

Differential Revision: https://phabricator.services.mozilla.com/D162496
mozilla · Nov 21, 2022 · 5c7ab9c · 5c7ab9c
1 parent 905441d
commit 5c7ab9c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/gfx/thebes/gfxTextRun.cpp b/gfx/thebes/gfxTextRun.cpp
@@ -407,7 +407,7 @@ bool gfxTextRun::GetAdjustedSpacingArray(
   memset(aSpacing->Elements(), 0, sizeof(gfxFont::Spacing) * spacingOffset);
   GetAdjustedSpacing(this, aSpacingRange, aProvider,
                      aSpacing->Elements() + spacingOffset);
-  memset(aSpacing->Elements() + aSpacingRange.end - aRange.start, 0,
+  memset(aSpacing->Elements() + spacingOffset + aSpacingRange.Length(), 0,
          sizeof(gfxFont::Spacing) * (aRange.end - aSpacingRange.end));
   return true;
 }