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[PATCH] IA-64/GAS: Fix format truncation compilation errors

Maciej W. Rozycki macro@orcam.me.uk
Wed Aug 6 22:01:28 GMT 2025 
Fix compilation errors:

.../gas/config/tc-ia64.c: In function 'declare_register_set':
.../gas/config/tc-ia64.c:5375:41: error: '%u' directive output may be truncated writing between 1 and 10 bytes into a region of size 8 [-Werror=format-truncation=]
 5375 |       snprintf (name, sizeof (name), "%s%u", prefix, i);
      |                                         ^~
.../gas/config/tc-ia64.c:5375:38: note: directive argument in the range [0, 4294967294]
 5375 |       snprintf (name, sizeof (name), "%s%u", prefix, i);
      |                                      ^~~~~~
.../gas/config/tc-ia64.c:5375:7: note: 'snprintf' output 2 or more bytes (assuming 11) into a destination of size 8
 5375 |       snprintf (name, sizeof (name), "%s%u", prefix, i);
      |       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

observed with GCC 10.  Pick 16 for a round 64-bit stack frame size.
---
 gas/config/tc-ia64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

binutils-gas-ia64-format-truncation.diff
Index: binutils-gdb/gas/config/tc-ia64.c
===================================================================
--- binutils-gdb.orig/gas/config/tc-ia64.c
+++ binutils-gdb/gas/config/tc-ia64.c
@@ -5367,7 +5367,7 @@ declare_register_set (const char *prefix
 		      unsigned int num_regs,
 		      unsigned int base_regnum)
 {
-  char name[8];
+  char name[16];
   unsigned int i;
 
   for (i = 0; i < num_regs; ++i)
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