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-rw-r--r--src/writeout.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/writeout.c b/src/writeout.c
index 14ba41b92..9aab77184 100644
--- a/src/writeout.c
+++ b/src/writeout.c
@@ -108,7 +108,7 @@ void ourWriteOut(CURL *curl, const char *writeinfo)
long longinfo;
double doubleinfo;
- while(*ptr) {
+ while(ptr && *ptr) {
if('%' == *ptr) {
if('%' == ptr[1]) {
/* an escaped %-letter */