gdb: testsuite: fix failed testcases in gdb.base/charset.exp

In gdb/testsuite/gdb.base/charset.c, the last argument is greater than 127
when call fill_run() in EBCDIC-US and IBM1047, but the type of string[] is
char, this will change the value due to sign extension.

For example, ebcdic_us_string[7] will be -63 instead of the original 193 in
EBCDIC-US.

Make the type of string[] as unsigned char to fix the following six failed
testcases:

  $ grep FAIL gdb/testsuite/gdb.sum
  FAIL: gdb.base/charset.exp: check value of parsed character literal in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of parsed string literal in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of escape that doesn't exist in EBCDIC-US
  FAIL: gdb.base/charset.exp: check value of parsed character literal in IBM1047
  FAIL: gdb.base/charset.exp: check value of parsed string literal in IBM1047
  FAIL: gdb.base/charset.exp: check value of escape that doesn't exist in IBM1047

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

diff --git a/gdb/testsuite/gdb.base/charset.c b/gdb/testsuite/gdb.base/charset.c
index ed9387b926d8ebe29bf1ed27a37f5c9ebafb578e..98aa100f291d58146ac27446fed534a8ba880f88 100644 (file)
--- a/gdb/testsuite/gdb.base/charset.c
+++ b/gdb/testsuite/gdb.base/charset.c
@@ -44,10 +44,10 @@
 
 #define NUM_CHARS (71)
 
-char ascii_string[NUM_CHARS];
-char iso_8859_1_string[NUM_CHARS];
-char ebcdic_us_string[NUM_CHARS];
-char ibm1047_string[NUM_CHARS];
+unsigned char ascii_string[NUM_CHARS];
+unsigned char iso_8859_1_string[NUM_CHARS];
+unsigned char ebcdic_us_string[NUM_CHARS];
+unsigned char ibm1047_string[NUM_CHARS];
 
 #ifndef __cplusplus
 
@@ -86,7 +86,7 @@ long long_array[3];
    explicit casts or warnings.  */
 
 void
-init_string (char string[],
+init_string (unsigned char string[],
             unsigned char x,
             unsigned char alert,
             unsigned char backspace,
@@ -115,7 +115,7 @@ init_string (char string[],
 
 
 void
-fill_run (char string[], int start, int len, int first)
+fill_run (unsigned char string[], int start, int len, int first)
 {
   int i;