Remove __cplusplus preamble from internal headers

These headers are internal and never exposed to a cpp compiler, hence no
need for the preamble.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/6554)

6 files changed, 0 insertions, 41 deletions

diff --git a/crypto/include/internal/aria.h b/crypto/include/internal/aria.h
index 073827185a..e402b8eec8 100644
--- a/crypto/include/internal/aria.h
+++ b/crypto/include/internal/aria.h
@@ -25,10 +25,6 @@
 # define ARIA_BLOCK_SIZE    16  /* Size of each encryption/decryption block */
 # define ARIA_MAX_KEYS      17  /* Number of keys needed in the worst case  */
 
-# ifdef  __cplusplus
-extern "C" {
-# endif
-
 typedef union {
     unsigned char c[ARIA_BLOCK_SIZE];
     unsigned int u[ARIA_BLOCK_SIZE / sizeof(unsigned int)];
@@ -51,8 +47,4 @@ int aria_set_decrypt_key(const unsigned char *userKey, const int bits,
 void aria_encrypt(const unsigned char *in, unsigned char *out,
                   const ARIA_KEY *key);
 
-# ifdef  __cplusplus
-}
-# endif
-
 #endif
diff --git a/crypto/include/internal/bn_int.h b/crypto/include/internal/bn_int.h
index ac49d1eab3..9379951dea 100644
--- a/crypto/include/internal/bn_int.h
+++ b/crypto/include/internal/bn_int.h
@@ -13,10 +13,6 @@
 # include <openssl/bn.h>
 # include <limits.h>
 
-#ifdef  __cplusplus
-extern "C" {
-#endif
-
 BIGNUM *bn_wexpand(BIGNUM *a, int words);
 BIGNUM *bn_expand2(BIGNUM *a, int words);
 
@@ -64,8 +60,4 @@ void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size);
  */
 int bn_set_words(BIGNUM *a, BN_ULONG *words, int num_words);
 
-#ifdef  __cplusplus
-}
-#endif
-
 #endif
diff --git a/crypto/include/internal/chacha.h b/crypto/include/internal/chacha.h
index 7d4366ea25..119361d4d8 100644
--- a/crypto/include/internal/chacha.h
+++ b/crypto/include/internal/chacha.h
@@ -12,10 +12,6 @@
 
 #include <stddef.h>
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /*
  * ChaCha20_ctr32 encrypts |len| bytes from |inp| with the given key and
  * nonce and writes the result to |out|, which may be equal to |inp|.
@@ -43,7 +39,4 @@ void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
 #define CHACHA_CTR_SIZE		16
 #define CHACHA_BLK_SIZE		64
 
-#ifdef __cplusplus
-}
-#endif
 #endif
diff --git a/crypto/include/internal/sm2.h b/crypto/include/internal/sm2.h
index 613fa34022..23e38952b2 100644
--- a/crypto/include/internal/sm2.h
+++ b/crypto/include/internal/sm2.h
@@ -15,10 +15,6 @@
 
 # ifndef OPENSSL_NO_SM2
 
-#  ifdef __cplusplus
-extern "C" {
-#  endif
-
 #  include <openssl/ec.h>
 
 /* The default user id as specified in GM/T 0009-2012 */
@@ -74,9 +70,5 @@ int sm2_decrypt(const EC_KEY *key,
                 const uint8_t *ciphertext,
                 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len);
 
-#  ifdef __cplusplus
-}
-#  endif
-
 # endif /* OPENSSL_NO_SM2 */
 #endif
diff --git a/crypto/include/internal/sm2err.h b/crypto/include/internal/sm2err.h
index 9a7e2b6275..f32d26c04b 100644
--- a/crypto/include/internal/sm2err.h
+++ b/crypto/include/internal/sm2err.h
@@ -15,9 +15,6 @@
 
 # ifndef OPENSSL_NO_SM2
 
-#  ifdef  __cplusplus
-extern "C"
-#  endif
 int ERR_load_SM2_strings(void);
 
 /*
diff --git a/crypto/include/internal/store_int.h b/crypto/include/internal/store_int.h
index 9966aefa67..0125aae03e 100644
--- a/crypto/include/internal/store_int.h
+++ b/crypto/include/internal/store_int.h
@@ -14,10 +14,6 @@
 # include <openssl/store.h>
 # include <openssl/ui.h>
 
-# ifdef  __cplusplus
-extern "C" {
-# endif
-
 /*
  * Two functions to read PEM data off an already opened BIO.  To be used
  * instead of OSSLSTORE_open() and OSSLSTORE_close().  Everything is done
@@ -27,7 +23,4 @@ OSSL_STORE_CTX *ossl_store_attach_pem_bio(BIO *bp, const UI_METHOD *ui_method,
                                           void *ui_data);
 int ossl_store_detach_pem_bio(OSSL_STORE_CTX *ctx);
 
-# ifdef  __cplusplus
-}
-# endif
 #endif