Remove NULL checks before xfree

A couple of spots in the TUI did a NULL check before an xfree.  This
isn't necessary, and most other cases were removed from gdb a while
ago.

gdb/ChangeLog
2019-06-25  Tom Tromey  <tom@tromey.com>

	* tui/tui-source.c (tui_set_source_content): Don't check before
	xfree.
	* tui/tui-disasm.c (tui_disassemble): Don't check before xfree.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2e64124..9898bcd 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,11 @@
 2019-06-25  Tom Tromey  <tom@tromey.com>
 
+       * tui/tui-source.c (tui_set_source_content): Don't check before
+       xfree.
+       * tui/tui-disasm.c (tui_disassemble): Don't check before xfree.
+
+2019-06-25  Tom Tromey  <tom@tromey.com>
+
        * tui/tui-winsource.h (tui_update_source_window_as_is)
        (tui_alloc_source_buffer, tui_line_is_displayed)
        (tui_addr_is_displayed): Change type of win_info.

diff --git a/gdb/tui/tui-disasm.c b/gdb/tui/tui-disasm.c
index d3d53d7..4899b1d 100644 (file)
--- a/gdb/tui/tui-disasm.c
+++ b/gdb/tui/tui-disasm.c
@@ -59,10 +59,8 @@ tui_disassemble (struct gdbarch *gdbarch, struct tui_asm_line *asm_lines,
   /* Now construct each line.  */
   for (; count > 0; count--, asm_lines++)
     {
-      if (asm_lines->addr_string)
-        xfree (asm_lines->addr_string);
-      if (asm_lines->insn)
-        xfree (asm_lines->insn);
+      xfree (asm_lines->addr_string);
+      xfree (asm_lines->insn);
       
       print_address (gdbarch, pc, &gdb_dis_out);
       asm_lines->addr = pc;

diff --git a/gdb/tui/tui-source.c b/gdb/tui/tui-source.c
index 4f82cba..889b950 100644 (file)
--- a/gdb/tui/tui-source.c
+++ b/gdb/tui/tui-source.c
@@ -163,8 +163,7 @@ tui_set_source_content (struct symtab *s,
            = (struct tui_source_window_base *) TUI_SRC_WIN;
          const char *s_filename = symtab_to_filename_for_display (s);
 
-         if (TUI_SRC_WIN->title)
-           xfree (TUI_SRC_WIN->title);
+         xfree (TUI_SRC_WIN->title);
          TUI_SRC_WIN->title = xstrdup (s_filename);
 
          xfree (src->fullname);