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-rw-r--r--src/mesa/main/objectlabel.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/main/objectlabel.c b/src/mesa/main/objectlabel.c
index b622d6a2979..b77cb5c4e36 100644
--- a/src/mesa/main/objectlabel.c
+++ b/src/mesa/main/objectlabel.c
@@ -104,6 +104,11 @@ copy_label(const GLchar *src, GLchar *dst, GLsizei *length, GLsizei bufSize)
* will be returned in <length>."
*/
+ if (bufSize == 0) {
+ if (length)
+ *length = strlen(src);
+ return;
+ }
if (src)
labelLen = strlen(src);