* readelf: ubsan: shift exponent 32 is too large
@ 2020-08-30 13:20 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2020-08-30 13:20 UTC (permalink / raw)
To: binutils
When compiled on a 32-bit host, a temp var is too small for possible
64-bit values to be calculated.
* readelf.c (print_gnu_build_attribute_name): Make "bytes"
unsigned long long.
diff --git a/binutils/readelf.c b/binutils/readelf.c
index f02848e468..94aa876b5a 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -19662,7 +19662,7 @@ print_gnu_build_attribute_name (Elf_Internal_Note * pnote)
while (bytes --)
{
- unsigned long byte = (* name ++) & 0xff;
+ unsigned long long byte = *name++ & 0xff;
val |= byte << shift;
shift += 8;
--
Alan Modra
Australia Development Lab, IBM
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