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-rw-r--r--src/tools/ldverify.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/tools/ldverify.c b/src/tools/ldverify.c
index 187bea0cefa..c51817c10b2 100644
--- a/src/tools/ldverify.c
+++ b/src/tools/ldverify.c
@@ -680,9 +680,9 @@ int main(int argc, char *argv[])
srcfilelen = strlen(srcfile);
if (srcfilelen < 4)
return usage();
- if (tolower(srcfile[srcfilelen-3]) == 'a' && tolower(srcfile[srcfilelen-2]) == 'v' && tolower(srcfile[srcfilelen-1]) == 'i')
+ if (tolower((UINT8)srcfile[srcfilelen-3]) == 'a' && tolower((UINT8)srcfile[srcfilelen-2]) == 'v' && tolower((UINT8)srcfile[srcfilelen-1]) == 'i')
isavi = TRUE;
- else if (tolower(srcfile[srcfilelen-3]) == 'c' && tolower(srcfile[srcfilelen-2]) == 'h' && tolower(srcfile[srcfilelen-1]) == 'd')
+ else if (tolower((UINT8)srcfile[srcfilelen-3]) == 'c' && tolower((UINT8)srcfile[srcfilelen-2]) == 'h' && tolower((UINT8)srcfile[srcfilelen-1]) == 'd')
isavi = FALSE;
else
return usage();