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Diffstat (limited to 'Build/source/texk/dvipsk/dospecial.c')
-rw-r--r--Build/source/texk/dvipsk/dospecial.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/Build/source/texk/dvipsk/dospecial.c b/Build/source/texk/dvipsk/dospecial.c
index e68470913f8..2cdf3c2f4fb 100644
--- a/Build/source/texk/dvipsk/dospecial.c
+++ b/Build/source/texk/dvipsk/dospecial.c
@@ -296,10 +296,8 @@ predospecial(integer numbytes, Boolean scanning)
int j;
static int omega_specials = 0;
- if (nextstring + numbytes > maxstring) {
- if (numbytes < 0
- || (numbytes > 0 && 2 > INT_MAX / numbytes)
- || 2 * numbytes > 1000 + 2 * numbytes) {
+ if (numbytes < 0 || numbytes > maxstring - nextstring) {
+ if (numbytes < 0 || numbytes > (INT_MAX - 1000) / 2 ) {
error("! Integer overflow in predospecial");
exit(1);
}
@@ -850,7 +848,11 @@ bbdospecial(int nbytes)
char seen[NKEYS];
float valseen[NKEYS];
- if (nextstring + nbytes > maxstring) {
+ if (nbytes < 0 || nbytes > maxstring - nextstring) {
+ if (nbytes < 0 || nbytes > (INT_MAX - 1000) / 2 ) {
+ error("! Integer overflow in bbdospecial");
+ exit(1);
+ }
p = nextstring = mymalloc(1000 + 2 * nbytes);
maxstring = nextstring + 2 * nbytes + 700;
}