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-rw-r--r--src/passphrase.c2
-rw-r--r--src/passphrase.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/passphrase.c b/src/passphrase.c
index 9fb4ef5..7f65c72 100644
--- a/src/passphrase.c
+++ b/src/passphrase.c
@@ -373,7 +373,7 @@ volatile sig_atomic_t passphrase_wipe_volatile = 1;
* @param ptr The password to wipe
* @param n The number of characters to wipe
*/
-void passphrase_wipe(char* ptr, size_t n)
+void passphrase_wipe(volatile char* ptr, size_t n)
{
size_t i;
for (i = 0; (i < n) && passphrase_wipe_volatile; i++)
diff --git a/src/passphrase.h b/src/passphrase.h
index 0731404..10c9914 100644
--- a/src/passphrase.h
+++ b/src/passphrase.h
@@ -33,7 +33,7 @@ extern char* passphrase_read(void);
* @param ptr The password to wipe
* @param n The number of characters to wipe
*/
-extern void passphrase_wipe(char* ptr, size_t n) __attribute__((optimize("-O0")));
+extern void passphrase_wipe(volatile char* ptr, size_t n) __attribute__((optimize("-O0")));
/**
* Disable echoing and do anything else to the terminal settnings `passphrase_read` requires