Fix ktx_strncasecmp (KhronosGroup#741)

Fixes KhronosGroup#740.
KaperD · Jul 17, 2023 · beb1773 · beb1773
1 parent 300514d
commit beb1773
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diff --git a/lib/mkvkformatfiles b/lib/mkvkformatfiles
@@ -183,6 +183,8 @@ END {
     begin_str2vk = begin_str2vk "        ++us2;\n"
     begin_str2vk = begin_str2vk "        --length;\n"
     begin_str2vk = begin_str2vk "    }\n"
+    begin_str2vk = begin_str2vk "    if (length == 0)\n"
+    begin_str2vk = begin_str2vk "        return 0;\n"
     begin_str2vk = begin_str2vk "    return tolower(*us1) - tolower(*us2);\n"
     begin_str2vk = begin_str2vk "}\n"
     begin_str2vk = begin_str2vk "\n"

diff --git a/lib/vkformat_str.c b/lib/vkformat_str.c
@@ -594,6 +594,8 @@ static int ktx_strncasecmp(const char* s1, const char* s2, int length) {
         ++us2;
         --length;
     }
+    if (length == 0)
+        return 0;
     return tolower(*us1) - tolower(*us2);
 }
-Original file line number
+Diff line change
@@ Expand Up @@
             ++us2;
             --length;
         }
+        if (length == 0)
+            return 0;
         return tolower(*us1) - tolower(*us2);
     }
@@ Expand Down @@