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* [binutils-gdb] [gdb/testsuite] Fix gdb.cp/break-f-std-string.cc with older gcc
@ 2022-05-12 12:52 Tom de Vries
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From: Tom de Vries @ 2022-05-12 12:52 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c8a9e88bf6ff32d90d082d07d3c5d12b938f8335
commit c8a9e88bf6ff32d90d082d07d3c5d12b938f8335
Author: Tom de Vries <tdevries@suse.de>
Date: Thu May 12 14:52:41 2022 +0200
[gdb/testsuite] Fix gdb.cp/break-f-std-string.cc with older gcc
When running test-case gdb.cp/break-f-std-string.exp on openSUSE Leap 15.3
with system gcc 7.5.0, I run into:
...
(gdb) whatis /r std::string^M
No symbol "string" in namespace "std".^M
(gdb) FAIL: gdb.cp/break-f-std-string.exp: _GLIBCXX_USE_CXX11_ABI=1: \
whatis /r std::string
...
The same for gcc 8.2.1, but it passes with gcc 9.3.1.
At source level (as we can observe in the .ii file with -save-temps) we have
indeed:
...
namespace std {
namespace __cxx11 {
typedef basic_string<char> string;
}
}
...
while with gcc 9.3.1, we have instead:
...
namespace std {
namespace __cxx11 {
...
}
typedef basic_string<char> string;
}
...
due to gcc commit 33b43b0d8cd ("Define std::string and related typedefs
outside __cxx11 namespace").
Fix this by adding the missing typedef for gcc version 5 (the first version to
have the dual abi) to 8 (the last version missing aforementioned gcc commit).
Tested on x86_64-linux, with:
- system gcc 7.5.0
- gcc 4.8.5, 8.2.1, 9.3.1, 10.3.0, 11.2.1
- clang 8.0.1, 12.0.1
Diff:
---
gdb/testsuite/gdb.cp/break-f-std-string.cc | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/gdb/testsuite/gdb.cp/break-f-std-string.cc b/gdb/testsuite/gdb.cp/break-f-std-string.cc
index 454ab4c42ea..0c361234d82 100644
--- a/gdb/testsuite/gdb.cp/break-f-std-string.cc
+++ b/gdb/testsuite/gdb.cp/break-f-std-string.cc
@@ -17,6 +17,19 @@
#include <string>
+#if _GLIBCXX_USE_CXX11_ABI == 1
+#if defined (__GNUC__) && (__GNUC__ >= 5) && (__GNUC__ <= 8)
+
+/* Work around missing std::string typedef before gcc commit
+ "Define std::string and related typedefs outside __cxx11 namespace". */
+
+namespace std {
+typedef __cxx11::string string;
+}
+
+#endif
+#endif
+
void
f (std::string s)
{
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