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Accepting request 705251 from home:tomdevries:branches:devel:gcc

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Update to 8.3 release

OBS-URL: https://build.opensuse.org/request/show/705251
OBS-URL: https://build.opensuse.org/package/show/devel:gcc/gdb?expand=0&rev=204
This commit is contained in:
Michael Matz
2019-05-24 13:40:33 +00:00
committed by Git OBS Bridge
parent 15e61520b4
commit 630d3f35be
85 changed files with 2777 additions and 16075 deletions
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41
gdb-glibc-strstr-workaround.patch
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@@ -4,43 +4,13 @@ Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: gdb-glibc-strstr-workaround.patch
;; Workaround PR libc/14166 for inferior calls of strstr.
;;=fedora: Compatibility with RHELs (unchecked which ones).
;;=fedoratest: Compatibility with RHELs (unchecked which ones).
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -21286,6 +21286,26 @@ new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu,
/* Cache this symbol's name and the name's demangled form (if any). */
SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack);
linkagename = dwarf2_physname (name, die, cu);
+
+ /* Workaround for:
+ * invalid IFUNC DW_AT_linkage_name: memmove strstr time
+ * http://sourceware.org/bugzilla/show_bug.cgi?id=14166 */
+ if (strcmp (linkagename, "strstr") == 0
+ && strstr (objfile_name (objfile), "/libc") != NULL)
+ {
+ struct objfile *objfile_msym;
+ struct bound_minimal_symbol bmsym;
+
+ if (objfile->separate_debug_objfile_backlink)
+ objfile_msym = objfile->separate_debug_objfile_backlink;
+ else
+ objfile_msym = objfile;
+ bmsym = lookup_minimal_symbol ("strstr", NULL, objfile_msym);
+ if (bmsym.minsym != NULL
+ && MSYMBOL_TYPE (bmsym.minsym) == mst_text_gnu_ifunc)
+ linkagename = "__strstr";
+ }
+
SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile);
/* Fortran does not have mangling standard and the mangling does differ
diff --git a/gdb/testsuite/gdb.base/gnu-ifunc-strstr-workaround.exp b/gdb/testsuite/gdb.base/gnu-ifunc-strstr-workaround.exp
new file mode 100644
--- /dev/null
+++ b/gdb/testsuite/gdb.base/gnu-ifunc-strstr-workaround.exp
@@ -0,0 +1,108 @@
@@ -0,0 +1,115 @@
+# Copyright (C) 2012 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
@@ -103,6 +73,10 @@ new file mode 100644
+ set addr $expect_out(1,string)
+ pass "$test (fixed glibc)"
+ }
+ -re " = {<text gnu-indirect-function variable, no debug info>} (0x\[0-9a-f\]+) <__libc_strstr_ifunc>\r\n$gdb_prompt $" {
+ set addr $expect_out(1,string)
+ pass "$test (fixed glibc)"
+ }
+ -re " = {char \\*\\(const char \\*, const char \\*\\)} 0x\[0-9a-f\]+ <strstr>\r\n$gdb_prompt $" {
+ untested "$test (gnu-ifunc not in use by glibc)"
+ return 0
@@ -142,6 +116,9 @@ new file mode 100644
+ -re " = {<text gnu-indirect-function variable, no debug info>} $addr <__libc_strstr>\r\n$gdb_prompt $" {
+ pass "$test (fixed glibc)"
+ }
+ -re " = {<text gnu-indirect-function variable, no debug info>} $addr <__libc_strstr_ifunc>\r\n$gdb_prompt $" {
+ pass "$test (fixed glibc)"
+ }
+ -re " = {void \\*\\(void\\)} 0x\[0-9a-f\]+ <strstr>\r\n$gdb_prompt $" {
+ fail $test
+ }