From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Sat, 28 Feb 2015 19:07:55 +0000 (-0300)
Subject: Avoid sign-extension error on multiplication
X-Git-Tag: v20~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d98f2d32d1e663bfb7a069a1623de15df6be765d;p=thirdparty%2Fkmod.git

Avoid sign-extension error on multiplication

Do not promote "idx * elf->header.section.entry_size" to int. Explicitly
cast the result to uint64_t so it's zero-extended.
---

diff --git a/libkmod/libkmod-elf.c b/libkmod/libkmod-elf.c
index 2f50ad2d..90da89ae 100644
--- a/libkmod/libkmod-elf.c
+++ b/libkmod/libkmod-elf.c
@@ -218,7 +218,7 @@ static inline const void *elf_get_section_header(const struct kmod_elf *elf, uin
 		return NULL;
 	}
 	return elf_get_mem(elf, elf->header.section.offset +
-			   idx * elf->header.section.entry_size);
+			   (uint64_t)(idx * elf->header.section.entry_size));
 }
 
 static inline int elf_get_section_info(const struct kmod_elf *elf, uint16_t idx, uint64_t *offset, uint64_t *size, uint32_t *nameoff)