[nasm:nasm-2.14.xx] eval: Eliminate division by zero

[nasm-bot f. C. G. <gor...@gm...>]

Commit-ID:  ceec0d818798aeaa75ed4907e6135b0247ed46b2
Gitweb:     http://repo.or.cz/w/nasm.git?a=commitdiff;h=ceec0d818798aeaa75ed4907e6135b0247ed46b2
Author:     Cyrill Gorcunov <gor...@gm...>
AuthorDate: Sun, 14 Oct 2018 01:26:19 +0300
Committer:  Cyrill Gorcunov <gor...@gm...>
CommitDate: Sun, 14 Oct 2018 01:49:43 +0300

eval: Eliminate division by zero

When doing division we should detect if the value we're
divided by is not zero. Instead of is_unknown() helper
we should use is_just_unknown().

https://bugzilla.nasm.us/show_bug.cgi?id=3392515
https://bugzilla.nasm.us/show_bug.cgi?id=3392473

Reported-by: Jun <jx...@ps...>
Reported-by: stuartly <sit...@gm...>
Signed-off-by: Cyrill Gorcunov <gor...@gm...>


---
 asm/eval.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/asm/eval.c b/asm/eval.c
index 1a6680f..7e727a4 100644
--- a/asm/eval.c
+++ b/asm/eval.c
@@ -580,7 +580,7 @@ static expr *expr5(int critical)
                   " scalar values");
             return NULL;
         }
-        if (j != '*' && !is_unknown(f) && reloc_value(f) == 0) {
+        if (j != '*' && !is_just_unknown(f) && reloc_value(f) == 0) {
             nasm_error(ERR_NONFATAL, "division by zero");
             return NULL;
         }