diff --git a/src/stdio/feof.c b/src/stdio/feof.c
index f2b739b5..5d7f4b02 100644
--- a/src/stdio/feof.c
+++ b/src/stdio/feof.c
@@ -8,3 +8,4 @@ int feof(FILE *f)
 }
 
 weak_alias(feof, feof_unlocked);
+weak_alias(feof, _IO_feof_unlocked);
diff --git a/src/stdio/ferror.c b/src/stdio/ferror.c
index f535fbed..8288a93d 100644
--- a/src/stdio/ferror.c
+++ b/src/stdio/ferror.c
@@ -8,3 +8,4 @@ int ferror(FILE *f)
 }
 
 weak_alias(ferror, ferror_unlocked);
+weak_alias(ferror, _IO_ferror_unlocked);
diff --git a/src/stdio/fgetc.c b/src/stdio/fgetc.c
index 4d8aca37..65a10fa6 100644
--- a/src/stdio/fgetc.c
+++ b/src/stdio/fgetc.c
@@ -11,3 +11,4 @@ int fgetc(FILE *f)
 }
 
 weak_alias(fgetc, getc);
+weak_alias(fgetc, _IO_getc);
diff --git a/src/stdio/fputc.c b/src/stdio/fputc.c
index 6a144a54..99532965 100644
--- a/src/stdio/fputc.c
+++ b/src/stdio/fputc.c
@@ -10,3 +10,4 @@ int fputc(int c, FILE *f)
 }
 
 weak_alias(fputc, putc);
+weak_alias(fputc, _IO_putc);
diff --git a/src/stdio/getc_unlocked.c b/src/stdio/getc_unlocked.c
index 203a1081..b38dad16 100644
--- a/src/stdio/getc_unlocked.c
+++ b/src/stdio/getc_unlocked.c
@@ -6,3 +6,4 @@ int (getc_unlocked)(FILE *f)
 }
 
 weak_alias (getc_unlocked, fgetc_unlocked);
+weak_alias (getc_unlocked, _IO_getc_unlocked);
diff --git a/src/stdio/getdelim.c b/src/stdio/getdelim.c
index 20d345d1..b7e04acb 100644
--- a/src/stdio/getdelim.c
+++ b/src/stdio/getdelim.c
@@ -57,3 +57,5 @@ oom:
 	errno = ENOMEM;
 	return -1;
 }
+
+weak_alias(getdelim, __getdelim);
diff --git a/src/stdio/putc_unlocked.c b/src/stdio/putc_unlocked.c
index b47876c9..10071312 100644
--- a/src/stdio/putc_unlocked.c
+++ b/src/stdio/putc_unlocked.c
@@ -6,3 +6,4 @@ int (putc_unlocked)(int c, FILE *f)
 }
 
 weak_alias(putc_unlocked, fputc_unlocked);
+weak_alias(putc_unlocked, _IO_putc_unlocked);