[PATCH] main: avoid leaking string on Haiku

[Eric Blake]

On Haiku, SIGBUS == SIGSEGV, so we were overwriting a malloc'd
string for a (minor) memory leak.

* src/m4.c (main): Avoid leak when SIGBUS == SIGSEGV.
* THANKS: Update.
Reported by Scott McCreary.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog |    7 +++++++
 THANKS    |    1 +
 gnulib    |    2 +-
 src/m4.c  |    2 +-
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index dcefbe7..a175613 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-12-31  Eric Blake  <address@hidden>
+
+       main: avoid leaking string on Haiku
+       * src/m4.c (main): Avoid leak when SIGBUS == SIGSEGV.
+       * THANKS: Update.
+       Reported by Scott McCreary.
+
 2010-12-24  Eric Blake  <address@hidden>

        build: pull in various gnulib fixes
diff --git a/THANKS b/THANKS
index b0f0c19..e1c0295 100644
--- a/THANKS
+++ b/THANKS
diff --git a/src/m4.c b/src/m4.c
index 3905ba1..42dbf65 100644
--- a/src/m4.c
+++ b/src/m4.c
@@ -397,7 +397,7 @@ main (int argc, char *const *argv)
   signal_message[SIGABRT] = xstrdup (strsignal (SIGABRT));
   signal_message[SIGILL] = xstrdup (strsignal (SIGILL));
   signal_message[SIGFPE] = xstrdup (strsignal (SIGFPE));
-  if (SIGBUS != SIGILL)
+  if (SIGBUS != SIGILL && SIGBUS != SIGSEGV)
     signal_message[SIGBUS] = xstrdup (strsignal (SIGBUS));
   sigemptyset (&act.sa_mask);
   /* One-shot - if we fault while handling a fault, we want to revert
-- 
1.7.3.4