libasm: Fix one GCC7 -Wformat-truncation=2 warning.

Mark Wielaard · Mark Wielaard · commit 93c51144c3f6 · 2017-03-24T17:45:53.000+01:00
Make sure that if we have really lots of labels the tempsym doesn't get truncated because it is too small to hold the whole name. This doesn't enable -Wformat-truncation=2 or fix other "issues" pointed out by enabling this warning because there are currently some issues with it. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79448 Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/libasm/ChangeLog b/libasm/ChangeLog
@@ -1,8 +1,12 @@
+2017-02-12  Mark Wielaard  <mjw@redhat.com>
+
+	* asm_newsym.c (asm_newsym): Increase TEMPSYMLEN to 13.
+
 2017-02-15  Ulf Hermann  <ulf.hermann@qt.io>
 
 	* disasm_str.c: Include system.h.
 
-2015-10-11  Akihiko Odaki  <akihiko.odaki.4i@stu.hosei.ac.jp>
+2016-10-11  Akihiko Odaki  <akihiko.odaki.4i@stu.hosei.ac.jp>
 
 	* asm_align.c: Remove sys/param.h include.
 
diff --git a/libasm/asm_newsym.c b/libasm/asm_newsym.c
@@ -1,5 +1,5 @@
 /* Define new symbol for current position in given section.
-   Copyright (C) 2002, 2005, 2016 Red Hat, Inc.
+   Copyright (C) 2002, 2005, 2016, 2017 Red Hat, Inc.
    This file is part of elfutils.
    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -44,7 +44,9 @@ AsmSym_t *
 asm_newsym (AsmScn_t *asmscn, const char *name, GElf_Xword size,
 	    int type, int binding)
 {
-#define TEMPSYMLEN 10
+/* We don't really expect labels with many digits, but in theory it could
+   be 10 digits (plus ".L" and a zero terminator).  */
+#define TEMPSYMLEN 13
   char tempsym[TEMPSYMLEN];
   AsmSym_t *result;
 
