[PATCH 2/6] dvbpsi: fix when _GNU_SOURCE is not defined

Based on a patch by Guilherme Lima Bernal <[email protected]>.

Signed-off-by: Timothy Gu <[email protected]>
---
 src/dvbpsi.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/dvbpsi.c b/src/dvbpsi.c
index 89d4932..141e3df 100644
--- a/src/dvbpsi.c
+++ b/src/dvbpsi.c
@@ -529,14 +529,10 @@ void dvbpsi_message(dvbpsi_t *dvbpsi, const dvbpsi_msg_level_t level, const char
         msg = malloc(DVBPSI_MSG_SIZE);
         if (msg == NULL) {
             va_end(ap);
-            return;
-        }
-        if (snprintf(&msg, DVBPSI_MSG_SIZE, DVBPSI_MSG_FORMAT, ap) < 0) {
-            va_end(ap);
             free(msg);
             return;
         }
-        int err = vsnprintf(&msg, DVBPSI_MSG_SIZE, fmt, ap);
+        int err = vsnprintf(msg, DVBPSI_MSG_SIZE, fmt, ap);
 #endif
         va_end(ap);
         if (err > DVBPSI_MSG_NONE) {
@@ -575,20 +571,28 @@ void dvbpsi_message(dvbpsi_t *dvbpsi, const dvbpsi_msg_level_t level, const char
         free(msg);                                              \
     } while(0);
 #   else
-#       define DVBPSI_MSG_COMMON                                \
+#       define DVBPSI_MSG_COMMON(level)                         \
     do {                                                        \
         va_list ap;                                             \
         va_start(ap, fmt);                                      \
         char *msg = malloc(DVBPSI_MSG_SIZE);                    \
-        if (msg == NULL) {                                      \
+        char *tmp = malloc(DVBPSI_MSG_SIZE);                    \
+        if (msg == NULL || tmp == NULL) {                       \
             va_end(ap);                                         \
+            if (msg)                                            \
+                free(msg);                                      \
+            if (tmp)                                            \
+                free(tmp);                                      \
             return;                                             \
         }                                                       \
-        if (snprintf(&msg, DVBPSI_MSG_SIZE, DVBPSI_MSG_FORMAT, src) < 0) { \
+        if (vsnprintf(tmp, DVBPSI_MSG_SIZE, fmt, ap) < 0) {     \
             va_end(ap);                                         \
+            free(tmp);                                          \
+            free(msg);                                          \
             return;                                             \
         }                                                       \
-        int err = vsnprintf(&msg, DVBPSI_MSG_SIZE, fmt, ap);    \
+        int err = snprintf(msg, DVBPSI_MSG_SIZE, DVBPSI_MSG_FORMAT, src, tmp); \
+        free(tmp);                                              \
         va_end(ap);                                             \
         if (err > 0) {                                          \
             if (dvbpsi->pf_message)                             \
-- 
1.9.1

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