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| author | Ben Hutchings <ben@decadent.org.uk> | 2022-10-02 00:23:26 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2022-10-02 00:27:43 +0200 |
| commit | eec04ea422f69d09288da8475c82e030c0300a60 (patch) | |
| tree | cd044608d187d920ec3ef8d8746cce16e94c6b31 | |
| parent | 7b813e0f793a78a6bf01afe371ea5b66144daa43 (diff) | |
| download | klibc-eec04ea422f69d09288da8475c82e030c0300a60.tar.gz | |
[klibc] zalloc: Fix infinite recursion with Clang 14klibc-2.0.11
zalloc() calls malloc() followed by memset(), which Clang 14 optimises
to a call to calloc(). But our calloc() calls zalloc(), so this
results in recursion until the stack is exhausted. Use the option
-fno-builtin-malloc to inhibit this optimisation for zalloc.c.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | usr/klibc/Kbuild | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/usr/klibc/Kbuild b/usr/klibc/Kbuild index 973b0c8179d85b..eb13a70ed57193 100644 --- a/usr/klibc/Kbuild +++ b/usr/klibc/Kbuild @@ -89,6 +89,10 @@ endif KLIBCCFLAGS_sprintf.o += $(call cc-option,-Wno-format-truncation, ) KLIBCCFLAGS_vsprintf.o += $(call cc-option,-Wno-format-truncation, ) +# Clang 14 optimises zalloc() to recursively call calloc(), without +# this option +KLIBCCFLAGS_zalloc.o += $(call cc-option,-fno-builtin-malloc, ) + # sigsuspend.c includes <klibc/havesyscall.h> generated by syscalls/ # build, so require that to build first $(obj)/sigsuspend.o: $(obj)/syscalls/klib.list |