GCC unescapes escaped string section names while Clang does not. Because
__section uses the `#` stringification operator for the section name, it
doesn't need to be escaped.
Instead, we should:
1. Prefer __section(.section_name_no_quotes).
2. Only use __attribute__((__section__(".section"))) when creating the
section name via C preprocessor (see the definition of __define_initcall
in arch/um/include/shared/init.h).
This antipattern was found with:
$ grep -e __section\(\" -e __section__\(\" -r
See the discussions in:
Link: https://bugs.llvm.org/show_bug.cgi?id=42950
Link: https://marc.info/?l=linux-netdev&m=156412960619946&w=2
Link: https://github.com/ClangBuiltLinux/linux/issues/619
Reported-by: Sedat Dilek <[email protected]>
Suggested-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Nick Desaulniers <[email protected]>
---
arch/um/kernel/um_arch.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index a818ccef30ca..18e0287dd97e 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -52,9 +52,9 @@ struct cpuinfo_um boot_cpu_data = {
.ipi_pipe = { -1, -1 }
};
-union thread_union cpu0_irqstack
- __attribute__((__section__(".data..init_irqstack"))) =
- { .thread_info = INIT_THREAD_INFO(init_task) };
+union thread_union cpu0_irqstack __section(.data..init_irqstack) = {
+ .thread_info = INIT_THREAD_INFO(init_task)
+};
/* Changed in setup_arch, which is called in early boot */
static char host_info[(__NEW_UTS_LEN + 1) * 5];
--
2.23.0.187.g17f5b7556c-goog
