diff options
| -rw-r--r-- | lib/ppmdfont.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/ppmdfont.c b/lib/ppmdfont.c index a378f79c..c0db3f51 100644 --- a/lib/ppmdfont.c +++ b/lib/ppmdfont.c @@ -1,5 +1,7 @@ #include <stdio.h> #include <assert.h> +#include <errno.h> +#include <string.h> #include "pm.h" #include "mallocvar.h" @@ -62,7 +64,15 @@ static void readFontHeader(FILE * const ifP, struct ppmd_fontHeader * const fontHeaderP) { - fread(&fontHeaderP->signature, 1, sizeof(fontHeaderP->signature), ifP); + size_t rc; + + rc = fread(&fontHeaderP->signature, 1, sizeof(fontHeaderP->signature), + ifP); + + if (rc != sizeof(fontHeaderP->signature)) + pm_error("Unable to read the header from the font file. " + "errno=%d (%s)", errno, strerror(errno)); + fontHeaderP->format = fgetc(ifP); fontHeaderP->characterCount = fgetc(ifP); fontHeaderP->firstCodePoint = fgetc(ifP); |