commit 2b16a9be69939822dcafe075413468daac98b327
author Mark Wielaard <mark@klomp.org> Thu Oct 18 19:01:52 2018 +0200
committer Mark Wielaard <mark@klomp.org> Sat Oct 20 00:13:09 2018 +0200
tree f20bfa91d71a0b7bbe878d4a63e57ef4b3709385
parent 4cdb0fd0d3b4255a9994ce302d6df76d251f7b75

arlib: Check that sh_entsize isn't zero.

A bogus ELF file could have sh_entsize as zero. Don't divide by zero,
but just assume there are no symbols in the section.

https://sourceware.org/bugzilla/show_bug.cgi?id=23786

Signed-off-by: Mark Wielaard <mark@klomp.org>

src/arlib.c

diff --git a/src/arlib.c b/src/arlib.c
index 778e087..a6521e3 100644
--- a/src/arlib.c
+++ b/src/arlib.c
@@ -252,6 +252,9 @@
       if (data == NULL)
 	continue;
 
+      if (shdr->sh_entsize == 0)
+	continue;
+
       int nsyms = shdr->sh_size / shdr->sh_entsize;
       for (int ndx = shdr->sh_info; ndx < nsyms; ++ndx)
 	{