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-rw-r--r--stdio-common/Makefile5
1 files changed, 3 insertions, 2 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index e312565f3b..60a7f4cff3 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -490,8 +490,9 @@ CFLAGS-tst-bz11319-fortify2.c += $(no-fortify-source),-D_FORTIFY_SOURCE=2
 
 CFLAGS-tst-memstream-string.c += -fno-builtin-fprintf
 
-# Some versions of GCC supported for building glibc do not support -std=c2x, so
-# the test for that version uses -std=c11 and then _ISOC2X_SOURCE is defined in
+# Some versions of GCC supported for building glibc do not support -std=c23
+# (added in GCC 14), or the older name -std=c2x (added in GCC 9), so
+# the test for that version uses -std=c11 and then _ISOC23_SOURCE is defined in
 # the test as needed.
 CFLAGS-tst-scanf-binary-c11.c += -std=c11 -DOBJPFX=\"$(objpfx)\"
 CFLAGS-tst-scanf-binary-c2x.c += -std=c11 -DOBJPFX=\"$(objpfx)\"