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check if ftell() returns -1

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Rinat Ibragimov 2015-04-29 21:27:41 +03:00
parent 2b4d17b337
commit 33b77673cb
1 changed files with 7 additions and 1 deletions
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8
parson.c
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@ -179,11 +179,17 @@ static size_t parson_strlen(const char *string) {
static char * read_file(const char * filename) { static char * read_file(const char * filename) {
FILE *fp = fopen(filename, "r"); FILE *fp = fopen(filename, "r");
size_t file_size; size_t file_size;
long pos;
char *file_contents; char *file_contents;
if (!fp) if (!fp)
return NULL; return NULL;
fseek(fp, 0L, SEEK_END); fseek(fp, 0L, SEEK_END);
file_size = ftell(fp); pos = ftell(fp);
if (pos < 0) {
fclose(fp);
return NULL;
}
file_size = pos;
rewind(fp); rewind(fp);
file_contents = (char*)PARSON_MALLOC(sizeof(char) * (file_size + 1)); file_contents = (char*)PARSON_MALLOC(sizeof(char) * (file_size + 1));
if (!file_contents) { if (!file_contents) {