gdb/SOURCES/gdb-6.5-bz218379-solib-trampoline-lookup-lock-fix.patch
2021-09-09 17:02:37 +00:00

28 lines
1.1 KiB
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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
From: Fedora GDB patches <invalid@email.com>
Date: Fri, 27 Oct 2017 21:07:50 +0200
Subject: gdb-6.5-bz218379-solib-trampoline-lookup-lock-fix.patch
;; Fix lockup on trampoline vs. its function lookup; unreproducible (BZ 218379).
;;=fedora
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=218379
diff --git a/gdb/symtab.c b/gdb/symtab.c
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -3165,6 +3165,13 @@ find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent)
SYMBOL_LINKAGE_NAME (msymbol)); */
;
/* fall through */
+ /* `msymbol' trampoline may be located before its .text symbol
+ but this text symbol may be the address we were looking for.
+ Avoid `find_pc_sect_line'<->`find_pc_line' infinite loop.
+ Red Hat Bug 218379. */
+ else if (BMSYMBOL_VALUE_ADDRESS (mfunsym) == pc)
+ warning ("In stub for %s (0x%s); interlocked, please submit the binary to http://bugzilla.redhat.com", MSYMBOL_LINKAGE_NAME (msymbol.minsym), paddress (target_gdbarch (), pc));
+ /* fall through */
else
return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym), 0);
}