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[gdb/testsuite] Fix regression in step-indirect-call-thunk.exp with gcc 7

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Since commit 43127ae571 ("Fix gdb.base/step-indirect-call-thunk.exp") I run
into:
...
gdb compile failed, gcc: error: unrecognized command line option \
  '-fcf-protection=none'; did you mean '-flto-partition=none'?
UNTESTED: gdb.base/step-indirect-call-thunk.exp: failed to prepare
...

The problem is that -fcf-protection is supported starting gcc 8, but I'm using
system gcc 7.5.0.

Fix this by only adding -fcf-protection=none for gcc 8 and later.

Tested on x86_64-linux, with gcc 7.5.0, 8.2.1 and 12.1.1.
This commit is contained in:
Tom de Vries 2022-07-18 06:13:45 +02:00
parent 68a5118c48
commit 9d9dd861e9
2 changed files with 16 additions and 1 deletions
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6
gdb/testsuite/gdb.base/step-indirect-call-thunk.exp
View File

@ -19,7 +19,11 @@ if { ![istarget "x86*"] } {
return
}
set cflags "-mindirect-branch=thunk -mfunction-return=thunk -fcf-protection=none"
set cflags "-mindirect-branch=thunk -mfunction-return=thunk"
if { [gcc_major_version] >= 8 } {
append cflags " -fcf-protection=none"
}
if { [prepare_for_testing "failed to prepare" $testfile $srcfile \
[list debug "additional_flags=$cflags"]] } {
return -1

11
gdb/testsuite/lib/gdb.exp
View File

@ -8529,6 +8529,17 @@ gdb_caching_proc supports_gnuc {
return [gdb_simple_compile $me $src object ""]
}
# Return 1 if compiler supports __GNUC__, otherwise return 0.
gdb_caching_proc supports_gnuc {
set me "supports_gnuc"
set src {
#ifndef __GNUC__
#error "No gnuc"
#endif
}
return [gdb_simple_compile $me $src object ""]
}
# Return 1 if target supports mpx, otherwise return 0.
gdb_caching_proc have_mpx {
global srcdir