Running mold on x86_64 macOS 11 currently leads to a segfault due to
inifinite recursion in do_main<X86_64>. Protect against this case by
only calling into do_main<X86_64> once if cputype doesn't match.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
This makes it possible to build and test mold in a path that contains
whitespace characters - with the notable exception of the tests where
`LD_PRELOAD` is used. That's because `LD_PRELOAD` unconditionally treats
any whitespace as separator, regardless of quoting.
The following ShellCheck warnings are eliminated by this commit:
* SC2046: Quote this to prevent word splitting.
* SC2086: Double quote to prevent globbing and word splitting.
Signed-off-by: Christoph Erhardt <github@sicherha.de>
For globbing, '?' matches a single character, so must be replaced
with '.'. As a result, don't skip the later regex matching for
version scripts, if the pattern contains either '*' or '?'.
Signed-off-by: Jan-Marek Glogowski <glogow@fbihome.de>
Previously, if there are more than one TLS BSS section (e.g. .tbss and
.tcommon), mold layout them in such a way that they overlap in memory.
That caused a mysterious program crash to the programs compiled with DMD,
a D compiler.
Fixes https://github.com/rui314/mold/issues/126
We always write dynamic relocation addends for bug-compatibiltiy
with the Go toolchain. Therefore, this flag is no-op.
See 919e8cbc62 for the details of
the Go's bug.
Compiler should not emit these types of relocations unless it knows
they will never refer imported symbols. However, it looks like GCC 7
emits these relocations against global symbols with STB_GNU_UNIQUE
attribute, which can be resolved to a symbol in other ELF module at
runtime. It looks like the bug only exists in GCC 7 and fixed in
recent versions of GCC.
mold verifies the above conditions and reports an error if the
condition is violated. On the other hand, GNU ld and LLVM lld don't
verify and simply create a shared library that is not always
guaranteed to work.
Give this situation, I decided to simply remove the verification code
from mold. This is what other linkers do, and it make mold "compatible"
with GCC 7.
Fixes https://github.com/rui314/mold/issues/145
When we are creating a DSO, unresolved undefined symbols are promoted to
dynamic symbols by default so that they will get another chance to be
resolved at runtime.
You can suppress this behavior by passing `-z defs`. If that option is
given, remaining undefs are reported as errors instead of being silently
promoted.
It looks like `-warn-undefined-symbols` negates the effect of `-z defs`.
So, if both options are given, remaining undefs are promoted to dynamic
symbols. mold previously silently make such symbols absolute symbols with
value 0.
Fixed https://github.com/rui314/mold/issues/152
This allows the caller to pass extra build options if desired.
Moreover, it is possible to run `./build-static.sh test` in order to
execute the testsuite inside the container.
Signed-off-by: Christoph Erhardt <github@sicherha.de>
