Currently, the new gcc.dg/lto/chkp-privatize test FAILs on Solaris/x86
with gas and ld for 64-bit:
UNRESOLVED: gcc.dg/lto/chkp-privatize
c_lto_chkp-privatize_0.o-c_lto_chkp-privatize_1.o execute -fPIC -flto
-flto-partition=max -fcheck-pointer-bounds -mmpx
FAIL: gcc.dg/lto/chkp-privatize
c_lto_chkp-privatize_0.o-c_lto_chkp-privatize_1.o link, -fPIC -flto
-flto-partition=max -fcheck-pointer-bounds -mmpx
output is:
ld: fatal: relocation error: file c_lto_chkp-privatize_0.o: section
[4].rela.text: invalid relocation type: 0x28
ld: fatal: symbol referencing errors
collect2: error: ld returned 1 exit status
This relocation type 0x28 (40) is R_X86_64_PLT32_BND, which Solaris 10
and 11 ld know nothing about.
Given that there's no test whatsoever in gcc/configure.ac that the whole
toolchain supports the necessary mnemonics and relocs, the logical place
seems to be the testsuite.
The following patch does just that, turning the mpx effective-target
test into a link test, thus checking both assembler and linker used.
Tested with the appropriate runtest invocations on i386-pc-solaris2.11
with as/ld (both 32 and 64-bit tests unsupported due to missing
assembler support), gas/ld (32-bit tests pass, 64-bit tests unsupported
due to missing linker support), and x86_64-unknown-linux-gnu (both 32
and 64-bit tests pass).
I wonder what's the point of having mpx-dg.exp at all: I'd rather move
the single test to target-supports.exp, avoiding the whole flurry of
mpx-dg.exp inclusions all over gcc/testsuite. Ilya? However that may
be, it can be done as a followup.
Ok for mainline?
Rainer
2014-12-18 Rainer Orth <r...@cebitec.uni-bielefeld.de>
* lib/mpx-dg.exp (check_effective_target_mpx): Change into link test.
Add main.
# HG changeset patch
# Parent bf453dbd938f27cf7eced4b5df3c29f5e452a55f
Change mpx effective-target test into link test
diff --git a/gcc/testsuite/lib/mpx-dg.exp b/gcc/testsuite/lib/mpx-dg.exp
--- a/gcc/testsuite/lib/mpx-dg.exp
+++ b/gcc/testsuite/lib/mpx-dg.exp
@@ -18,7 +18,8 @@
# error-free for trivial code, 0 otherwise.
proc check_effective_target_mpx {} {
- return [check_no_compiler_messages mpx object {
+ return [check_no_compiler_messages mpx executable {
int *foo (int *arg) { return arg; }
+ int main (void) { return foo ((void *)0) == 0; }
} "-fcheck-pointer-bounds -mmpx"]
}
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
