Imagelibrary/binutils-gdb
1
0
Fork 1
mirror of https://github.com/bminor/binutils-gdb.git synced 2025-12-07 16:13:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

ubsan: undefined shift in sign_extend

Browse Source 
* libhppa.h (sign_extend): Avoid undefined behaviour.
This commit is contained in:
Alan Modra
2022-08-13 14:07:31 +09:30
parent 8c68d88cc4
commit 9effb9f15f
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
bfd/libhppa.h
View File

@@ -162,7 +162,7 @@ enum hppa_reloc_expr_type_alt
static inline unsigned ATTRIBUTE_UNUSED static inline unsigned ATTRIBUTE_UNUSED
sign_extend (unsigned x, unsigned len) sign_extend (unsigned x, unsigned len)
{ {
unsigned signbit = (1 << (len - 1)); unsigned signbit = (1u << (len - 1));
unsigned mask = (signbit << 1) - 1; unsigned mask = (signbit << 1) - 1;
return ((x & mask) ^ signbit) - signbit; return ((x & mask) ^ signbit) - signbit;
} }