[ELF] - Do not crash if common symbol has alignment 0.
Testcase contains a common symbol with zero alignment,
previously lld would crash, patch fixes that.
Differential revision: https://reviews.llvm.org/D25085
llvm-svn: 283197
diff --git a/lld/ELF/InputFiles.cpp b/lld/ELF/InputFiles.cpp
index 9d22956..0981e2c 100644
--- a/lld/ELF/InputFiles.cpp
+++ b/lld/ELF/InputFiles.cpp
@@ -400,6 +400,9 @@
/*CanOmitFromDynSym*/ false, this)
->body();
case SHN_COMMON:
+ if (Sym->st_value == 0)
+ fatal(getFilename(this) + ": common symbol '" + Name +
+ "' alignment is 0");
return elf::Symtab<ELFT>::X->addCommon(Name, Sym->st_size, Sym->st_value,
Binding, Sym->st_other,
Sym->getType(), this)