16 files changed, 2 insertions, 68 deletions
diff --git a/libavutil/avstring.c b/libavutil/avstring.c
index 802d0f85e7..f03df67441 100644
--- a/libavutil/avstring.c
+++ b/libavutil/avstring.c
@@ -214,7 +214,6 @@ int av_strncasecmp(const char *a, const char *b, size_t n)
 #ifdef TEST
 
 #include "common.h"
-#undef printf
 
 int main(void)
 {
diff --git a/libavutil/base64.c b/libavutil/base64.c
index d907805c7f..98b9c94d8a 100644
--- a/libavutil/base64.c
+++ b/libavutil/base64.c
@@ -175,8 +175,6 @@ char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size)
 #ifdef TEST
 // LCOV_EXCL_START
 
-#undef printf
-
 #define MAX_DATA_SIZE    1024
 #define MAX_ENCODED_SIZE 2048
 
diff --git a/libavutil/blowfish.c b/libavutil/blowfish.c
index cdc2952dea..5ad74c10fd 100644
--- a/libavutil/blowfish.c
+++ b/libavutil/blowfish.c
@@ -420,7 +420,6 @@ void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
 
 #ifdef TEST
 #include <stdio.h>
-#undef printf
 
 #define NUM_VARIABLE_KEY_TESTS 34
 
@@ -523,7 +522,6 @@ static const uint8_t ciphertext2[16] = {
 
 #define IV "blowfish"
 
-#undef exit
 static void test_blowfish(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
                           const uint8_t *ref, int len, uint8_t *iv, int dir,
                           const char *test)
diff --git a/libavutil/cpu.c b/libavutil/cpu.c
index e14b413725..a1d1547033 100644
--- a/libavutil/cpu.c
+++ b/libavutil/cpu.c
@@ -175,7 +175,6 @@ int av_parse_cpu_caps(unsigned *flags, const char *s)
 }
 #ifdef TEST
 
-#undef printf
 #include <stdio.h>
 
 static const struct {
diff --git a/libavutil/crc.c b/libavutil/crc.c
index bba8cb10a5..aeb9e466ab 100644
--- a/libavutil/crc.c
+++ b/libavutil/crc.c
@@ -113,7 +113,6 @@ uint32_t av_crc(const AVCRC *ctx, uint32_t crc,
 }
 
 #ifdef TEST
-#undef printf
 int main(void)
 {
     uint8_t buf[1999];
diff --git a/libavutil/des.c b/libavutil/des.c
index 32ac26f69c..a7a5074203 100644
--- a/libavutil/des.c
+++ b/libavutil/des.c
@@ -337,10 +337,6 @@ void av_des_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count) {
 }
 
 #ifdef TEST
-// LCOV_EXCL_START
-#undef printf
-#undef rand
-#undef srand
 #include <stdlib.h>
 #include <stdio.h>
 #include "libavutil/time.h"
@@ -442,5 +438,4 @@ int main(void) {
 #endif
     return 0;
 }
-// LCOV_EXCL_STOP
 #endif
diff --git a/libavutil/eval.c b/libavutil/eval.c
index 0d6bd15529..4a27742729 100644
--- a/libavutil/eval.c
+++ b/libavutil/eval.c
@@ -660,8 +660,6 @@ int av_expr_parse_and_eval(double *d, const char *s,
 }
 
 #ifdef TEST
-// LCOV_EXCL_START
-#undef printf
 #include <string.h>
 
 static const double const_values[] = {
@@ -797,5 +795,4 @@ int main(int argc, char **argv)
 
     return 0;
 }
-// LCOV_EXCL_STOP
 #endif
diff --git a/libavutil/fifo.c b/libavutil/fifo.c
index 47328c4585..bafa9e9f98 100644
--- a/libavutil/fifo.c
+++ b/libavutil/fifo.c
@@ -149,8 +149,6 @@ void av_fifo_drain(AVFifoBuffer *f, int size)
 
 #ifdef TEST
 
-#undef printf
-
 int main(void)
 {
     /* create a FIFO buffer */
diff --git a/libavutil/internal.h b/libavutil/internal.h
index cc977f64da..4400c5c439 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -58,38 +58,6 @@
 #    define INT_BIT (CHAR_BIT * sizeof(int))
 #endif
 
-/* avoid usage of dangerous/inappropriate system functions */
-#undef  malloc
-#define malloc please_use_av_malloc
-#undef  free
-#define free please_use_av_free
-#undef  realloc
-#define realloc please_use_av_realloc
-#undef  rand
-#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get
-#undef  srand
-#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init
-#undef  random
-#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get
-#undef  sprintf
-#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
-#undef  strcat
-#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
-#undef  exit
-#define exit exit_is_forbidden
-#undef  printf
-#define printf please_use_av_log_instead_of_printf
-#undef  fprintf
-#define fprintf please_use_av_log_instead_of_fprintf
-#undef  puts
-#define puts please_use_av_log_instead_of_puts
-#undef  perror
-#define perror please_use_av_log_instead_of_perror
-#undef strcasecmp
-#define strcasecmp please_use_av_strcasecmp
-#undef strncasecmp
-#define strncasecmp please_use_av_strncasecmp
-
 #define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
 {\
     p = av_malloc(size);\
diff --git a/libavutil/log.c b/libavutil/log.c
index 57b3d5d087..700e89fa97 100644
--- a/libavutil/log.c
+++ b/libavutil/log.c
@@ -99,7 +99,6 @@ static const uint32_t color[16 + AV_CLASS_CATEGORY_NB] = {
 #endif
 static int use_color = -1;
 
-#undef fprintf
 static void colored_fputs(int level, const char *str)
 {
     if (use_color < 0) {
@@ -220,7 +219,6 @@ void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
         is_atty = isatty(2) ? 1 : -1;
 #endif
 
-#undef fprintf
     if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev)){
         count++;
         if (is_atty == 1)
diff --git a/libavutil/md5.c b/libavutil/md5.c
index d0d0d27f07..f8f08f130b 100644
--- a/libavutil/md5.c
+++ b/libavutil/md5.c
@@ -180,7 +180,6 @@ void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len)
 }
 
 #ifdef TEST
-#undef printf
 #include <stdio.h>
 
 static void print_md5(uint8_t *md5)
diff --git a/libavutil/mem.c b/libavutil/mem.c
index d73cddefd0..4253740a10 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -40,11 +40,6 @@
 #include "intreadwrite.h"
 #include "mem.h"
 
-/* here we can use OS-dependent allocation functions */
-#undef free
-#undef malloc
-#undef realloc
-
 #ifdef MALLOC_PREFIX
 
 #define malloc         AV_JOIN(MALLOC_PREFIX, malloc)
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 0ff45c8116..e81da47dbf 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -1163,8 +1163,6 @@ void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
 
 #ifdef TEST
 
-#undef printf
-
 typedef struct TestContext
 {
     const AVClass *class;
diff --git a/libavutil/parseutils.c b/libavutil/parseutils.c
index f188e815fa..ca40569e6a 100644
--- a/libavutil/parseutils.c
+++ b/libavutil/parseutils.c
@@ -31,8 +31,6 @@
 #include "random_seed.h"
 #include "parseutils.h"
 
-#undef time
-
 #ifdef TEST
 
 #define av_get_random_seed av_get_random_seed_deterministic
@@ -676,15 +674,13 @@ int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info
 
 #ifdef TEST
 
-static uint32_t random = MKTAG('L','A','V','U');
+static uint32_t randomv = MKTAG('L','A','V','U');
 
 static uint32_t av_get_random_seed_deterministic(void)
 {
-    return random = random * 1664525 + 1013904223;
+    return randomv = randomv * 1664525 + 1013904223;
 }
 
-#undef printf
-
 int main(void)
 {
     printf("Testing av_parse_video_rate()\n");
diff --git a/libavutil/sha.c b/libavutil/sha.c
index 8d5ca458f9..9f630fcc87 100644
--- a/libavutil/sha.c
+++ b/libavutil/sha.c
@@ -332,7 +332,6 @@ void av_sha_final(AVSHA* ctx, uint8_t *digest)
 
 #ifdef TEST
 #include <stdio.h>
-#undef printf
 
 int main(void)
 {
diff --git a/libavutil/xtea.c b/libavutil/xtea.c
index 28780fb551..d4eede70f0 100644
--- a/libavutil/xtea.c
+++ b/libavutil/xtea.c
@@ -183,7 +183,6 @@ void av_xtea_crypt(AVXTEA *ctx, uint8_t *dst, const uint8_t *src, int count,
 
 #ifdef TEST
 #include <stdio.h>
-#undef printf
 
 #define XTEA_NUM_TESTS 6
 
@@ -220,7 +219,6 @@ static const uint8_t xtea_test_ct[XTEA_NUM_TESTS][8] = {
     { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
 };
 
-#undef exit
 static void test_xtea(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
                       const uint8_t *ref, int len, uint8_t *iv, int dir,
                       const char *test)