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authorThomas Koenig <Thomas.Koenig@online.de>2006-06-01 19:23:56 +0000
committerThomas Koenig <tkoenig@gcc.gnu.org>2006-06-01 19:23:56 +0000
commit47fe00d8f5ae7ba8e66f1c97f969eb87a4695ffe (patch)
tree5efb54dbef143558582bc811fea1879150fca2a4 /gcc/fortran
parentdf5c71ac3c955306a63994af858694a29b2e6217 (diff)
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re PR fortran/27715 (Extented ASCII characters lead to wrong "CASE" selection)
2006-06-01 Thomas Koenig <Thomas.Koenig@online.de> PR fortran/27715 * arith.c: Cast the characters from the strings to unsigned char to avoid values less than 0 for extended ASCII. 2006-06-01 Thomas Koenig <Thomas.Koenig@online.de> PR fortran/27715 * gfortran.dg/extended_char_comparison_1.f: New test. From-SVN: r114317
Diffstat (limited to 'gcc/fortran')
-rw-r--r--gcc/fortran/ChangeLog6
-rw-r--r--gcc/fortran/arith.c6
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index eb093a7..44c61b6 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2006-06-01 Thomas Koenig <Thomas.Koenig@online.de>
+
+ PR fortran/27715
+ * arith.c: Cast the characters from the strings to unsigned
+ char to avoid values less than 0 for extended ASCII.
+
2006-06-01 Per Bothner <bothner@bothner.com>
* data.c (gfc_assign_data_value): Handle USE_MAPPED_LOCATION.
diff --git a/gcc/fortran/arith.c b/gcc/fortran/arith.c
index a65447a..348b87f 100644
--- a/gcc/fortran/arith.c
+++ b/gcc/fortran/arith.c
@@ -1133,8 +1133,10 @@ gfc_compare_string (gfc_expr * a, gfc_expr * b, const int *xcoll_table)
for (i = 0; i < len; i++)
{
- ac = (i < alen) ? a->value.character.string[i] : ' ';
- bc = (i < blen) ? b->value.character.string[i] : ' ';
+ /* We cast to unsigned char because default char, if it is signed,
+ would lead to ac<0 for string[i] > 127. */
+ ac = (unsigned char) ((i < alen) ? a->value.character.string[i] : ' ');
+ bc = (unsigned char) ((i < blen) ? b->value.character.string[i] : ' ');
if (xcoll_table != NULL)
{