diff --git a/vpi/cppcheck.sup b/vpi/cppcheck.sup
index 4c260cd00..0ec47e24c 100644
--- a/vpi/cppcheck.sup
+++ b/vpi/cppcheck.sup
@@ -3,6 +3,7 @@
 // problems will not be fixed.
 
 // fstapi.c from GTKWave
+obsoleteFunctionsasctime:fstapi.c:652
 variableScope:fstapi.c:1707
 variableScope:fstapi.c:1965
 variableScope:fstapi.c:2109
@@ -11,7 +12,7 @@ variableScope:fstapi.c:2269
 variableScope:fstapi.c:2976
 variableScope:fstapi.c:3304
 variableScope:fstapi.c:3313
-variableScope:fstapi.c:4980
+variableScope:fstapi.c:4982
 
 // lxt2_write.c from GTKWave
 obsoleteFunctionsalloca:lxt2_write.c:1813
diff --git a/vpi/fstapi.c b/vpi/fstapi.c
index bac88f44c..f4f6611b3 100644
--- a/vpi/fstapi.c
+++ b/vpi/fstapi.c
@@ -3820,7 +3820,7 @@ for(;;)
 	uint64_t tpval;
 	int ti;
 
-	fseeko(xc->f, blkpos + seclen - 24, SEEK_SET);
+	if(fseeko(xc->f, blkpos + seclen - 24, SEEK_SET) != 0) break;
 	tsec_uclen = fstReaderUint64(xc->f);
 	tsec_clen = fstReaderUint64(xc->f);
 	tsec_nitems = fstReaderUint64(xc->f);
@@ -3828,7 +3828,9 @@ for(;;)
 	printf("\ttime section unc: %d, com: %d (%d items)\n", 
 		(int)tsec_uclen, (int)tsec_clen, (int)tsec_nitems);
 #endif		
+	if(tsec_clen > seclen) break; /* corrupted tsec_clen: by definition it can't be larger than size of section */
 	ucdata = malloc(tsec_uclen);
+	if(!ucdata) break; /* malloc fail as tsec_uclen out of range from corrupted file */
 	destlen = tsec_uclen;
 	sourcelen = tsec_clen;