PATCH: Fix TUI null pointer dereference

[Andrew STUBBS <andrew.stubbs@st.com>]

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Hi,

The attached patch fixes a NULL pointer dereference starting the TUI 
when the TERM environment variable is not set. This is a particular 
problem on windows where that variable is not usually set.

2005-10-17  Andrew Stubbs  <andrew.stubbs@st.com>

	* tui/tui-command.c (tui_dispatch_ctrl_char): Test output of
	getenv() before using it.

Andrew Stubbs


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Index: src/gdb/tui/tui-command.c
===================================================================
--- src.orig/gdb/tui/tui-command.c	2004-02-16 21:05:09.000000000 +0000
+++ src/gdb/tui/tui-command.c	2005-10-17 14:33:06.000000000 +0100
@@ -70,7 +70,7 @@ tui_dispatch_ctrl_char (unsigned int ch)
       term = (char *) getenv ("TERM");
       for (i = 0; (term && term[i]); i++)
 	term[i] = toupper (term[i]);
-      if ((strcmp (term, "XTERM") == 0) && key_is_start_sequence (ch))
+      if (term && (strcmp (term, "XTERM") == 0) && key_is_start_sequence (ch))
 	{
 	  unsigned int page_ch = 0;
 	  unsigned int tmp_char;