Fix leak in forward-search

Valgrind reports the below leak.
Fix the leak by using xrealloc, even for the first allocation,
as buf is static.

==29158== 5,888 bytes in 23 blocks are definitely lost in loss record 3,028 of 3,149
==29158==    at 0x4C2BE2D: malloc (vg_replace_malloc.c:299)
==29158==    by 0x41B557: xmalloc (common-utils.c:44)
==29158==    by 0x60B7D9: forward_search_command(char const*, int) (source.c:1563)
==29158==    by 0x40BA68: cmd_func(cmd_list_element*, char const*, int) (cli-decode.c:1888)
==29158==    by 0x665300: execute_command(char const*, int) (top.c:630)
...

gdb/ChangeLog
2018-11-29  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* source.c (forward_search_command): Fix leak by using
	xrealloc even for the first allocation in the loop, as buf
	is static.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1ec466d618929cba81ae0a93a05abafa0dca7a29..d4749dc778ffb75e00b9b11328d0fcbd331ca204 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2018-11-29  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
+
+       * source.c (forward_search_command): Fix leak by using
+       xrealloc even for the first allocation in the loop, as buf
+       is static.
+
 2018-11-29  Rajendra SY  <rajendra.sy@gmail.com>
 
        PR gdb/23093

diff --git a/gdb/source.c b/gdb/source.c
index e295fbf49e39e2ec03fe04f817947e66d00e2f04..c75351e65f4e0c48b64e55af7bd388bff8a1b25f 100644 (file)
--- a/gdb/source.c
+++ b/gdb/source.c
@@ -1560,7 +1560,7 @@ forward_search_command (const char *regex, int from_tty)
       int cursize, newsize;
 
       cursize = 256;
-      buf = (char *) xmalloc (cursize);
+      buf = (char *) xrealloc (buf, cursize);
       p = buf;
 
       c = fgetc (stream.get ());