gdb/doc/

	* gdb.texinfo (Index Section Format): Change the version to 5.
	Describe the different formula.

gdb/
	Case insensitive lookups implementation.
	* dwarf2read.c: Include ctype.h.
	(struct mapped_index): New field version.
	(mapped_index_string_hash): New parameter index_version.  New comment
	for it.  Call tolower appropriately.
	(find_slot_in_mapped_hash): New variable cmp, initialize it, use it.
	Choose the right index version for mapped_index_string_hash.
	(dwarf2_read_index): Support also the index version 5.  Initialize the
	new struct mapped_index field version.
	(hash_strtab_entry): Pass INT_MAX for the new parameter, explain why.
	(find_slot): Explain the version needs.  Pass INT_MAX for the new
	parameter.
	(write_psymtabs_to_index): Produce version 5.
	* minsyms.c (lookup_minimal_symbol): New variable cmp, initialize it,
	use it.  New comment for SYMBOL_MATCHES_SEARCH_NAME.
	* psymtab.c (lookup_partial_symbol): Find the
	SYMBOL_MATCHES_SEARCH_NAME start of the found block of matching
	entries.
	* symtab.c (lookup_symbol_in_language): Remove the case_sensitive_off
	NAME lowercasing.
	(search_symbols): Pass REG_ICASE to regcomp for case_sensitive_off.
	(completion_list_add_name): New variable ncmp, initialize it, use it.
	* symtab.h (SYMBOL_HASH_NEXT): Always call tolower.
	* utils.c (strcmp_iw): Support case_sensitive_off.
	(strcmp_iw_ordered): Sort in a way compatible with case_sensitive_off.
	New function comment part.  New variables saved_string1,
	saved_string2 and case_pass.  Add a proper second pass.

gdb/testsuite/
	* gdb.base/fortran-sym-case.c: New file.
	* gdb.base/fortran-sym-case.exp: New file.
	* gdb.dwarf2/dw2-case-insensitive-debug.S: New file.
	* gdb.dwarf2/dw2-case-insensitive.c: New file.
	* gdb.dwarf2/dw2-case-insensitive.exp: New file.

2 files changed, 20 insertions, 4 deletions

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index aa3c893..514d584 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,9 @@
+2011-04-27  Jan Kratochvil  <jan.kratochvil@redhat.com>
+	    Eli Zaretskii  <eliz@gnu.org>
+
+	* gdb.texinfo (Index Section Format): Change the version to 5.
+	Describe the different formula.
+
 2011-04-24  Jan Kratochvil  <jan.kratochvil@redhat.com>
 	    Eli Zaretskii  <eliz@gnu.org>
 
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 15ccf2e..ff5b7cb 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -36993,7 +36993,8 @@ unless otherwise noted:
 
 @enumerate
 @item
-The version number, currently 4.  Versions 1, 2 and 3 are obsolete.
+The version number, currently 5.  Versions 1, 2 and 3 are obsolete.
+Version 4 differs by its hashing function.
 
 @item
 The offset, from the start of the file, of the CU list.
@@ -37061,9 +37062,18 @@ valid index for both a string and a CU vector.
 The hash value for a table entry is computed by applying an
 iterative hash function to the symbol's name.  Starting with an
 initial value of @code{r = 0}, each (unsigned) character @samp{c} in
-the string is incorporated into the hash using the formula
-@code{r = r * 67 + c - 113}.  The terminating @samp{\0} is not
-incorporated into the hash.
+the string is incorporated into the hash using the formula depending on the
+index version:
+
+@table @asis
+@item Version 4
+The formula is @code{r = r * 67 + c - 113}.
+
+@item Version 5
+The formula is @code{r = r * 67 + tolower (c) - 113}.
+@end table
+
+The terminating @samp{\0} is not incorporated into the hash.
 
 The step size used in the hash table is computed via
 @code{((hash * 17) & (size - 1)) | 1}, where @samp{hash} is the hash