[PATCH] kgdb: Replace strstr() by strchr() for single-characterneedles

From: Geert Uytterhoeven
Date: Fri Sep 11 2009 - 16:21:22 EST


Some versions of gcc replace calls to strstr() with single-character
"needle" string parameters by calls to strchr() behind our back.
This causes linking errors if strchr() is defined as an inline function
in <asm/string.h> (e.g. on m68k, which BTW doesn't have kgdb support).

Prevent this by explicitly calling strchr() instead.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
This is the single remaining case where strstr() is used with a
single-character needle. Cfr.
commit 0d03d59d9b31cd1e33b7e46a80b6fef66244b1f2 ("md: Fix "strchr"
[drivers/md/dm-log-userspace.ko] undefined!")
commit d8b0fb51ef1563c631d26cb649a5479b5cc4899c ("[PATCH] libertas link error
due to gcc `smartness'")

drivers/misc/kgdbts.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index e4ff50b..2a43d8c 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -885,16 +885,16 @@ static void kgdbts_run_tests(void)
int nmi_sleep = 0;
int i;

- ptr = strstr(config, "F");
+ ptr = strchr(config, 'F');
if (ptr)
fork_test = simple_strtol(ptr + 1, NULL, 10);
- ptr = strstr(config, "S");
+ ptr = strchr(config, 'S');
if (ptr)
do_sys_open_test = simple_strtol(ptr + 1, NULL, 10);
- ptr = strstr(config, "N");
+ ptr = strchr(config, 'N');
if (ptr)
nmi_sleep = simple_strtol(ptr+1, NULL, 10);
- ptr = strstr(config, "I");
+ ptr = strchr(config, 'I');
if (ptr)
sstep_test = simple_strtol(ptr+1, NULL, 10);

--
1.6.0.4

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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