src/schema_compile_node.c: coverity fix - overflowed constant

jsc-se · jsc-se · commit 3842eee018fa · 2025-04-23T13:40:48.000+02:00
diff --git a/src/schema_compile_node.c b/src/schema_compile_node.c
@@ -1229,7 +1229,9 @@ lys_compile_pattern_chblocks_xmlschema2perl(const struct ly_ctx *ctx, const char
                 ++idx;
             }
             if ((perl_regex[idx2] == ']') && (!idx2 || (perl_regex[idx2 - 1] != '\\'))) {
-                --idx;
+                if (idx > 0) {
+                    --idx;
+                }
             }
         }
         if (idx) {

Original file line number	Diff line number	Diff line change
`@@ -1229,7 +1229,9 @@ lys_compile_pattern_chblocks_xmlschema2perl(const struct ly_ctx *ctx, const char`
`1229`	`1229`	`++idx;`
`1230`	`1230`	`}`
`1231`	`1231`	`if ((perl_regex[idx2] == ']') && (!idx2 \|\| (perl_regex[idx2 - 1] != '\\'))) {`
`1232`		`- --idx;`
	`1232`	`+ if (idx > 0) {`
	`1233`	`+ --idx;`
	`1234`	`+ }`
`1233`	`1235`	`}`
`1234`	`1236`	`}`
`1235`	`1237`	`if (idx) {`