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From: kkojima@gcc.gnu.org To: gcc-gnats@gcc.gnu.org Subject: other/7620: gij doesn't work properly on SH port. Date: Sat, 17 Aug 2002 01:37:00 -0000 [thread overview] Message-ID: <20020817011314.305.qmail@sources.redhat.com> (raw) >Number: 7620 >Category: other >Synopsis: gij doesn't work properly on SH port. >Confidential: no >Severity: critical >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Fri Aug 16 18:16:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: kkojima@gcc.gnu.org >Release: 3.3 20020808 (experimental) >Organization: >Environment: host: sh4-unknown-linux-gnu build: sh4-unknown-linux-gnu target: sh4-unknown-linux-gnu >Description: Automatic variable sized array is clobbered when the sjlj exception is threw. Compiler generates the code which _Unwind_SjLj_Register is called before allocating stack for a variable sized array which is automatic variable. So the stack pointer is set higher than such arrays when the exception threw, and the contents of these arrays are clobbered. >How-To-Repeat: Compile the following source with cc1plus for sh4-unknown-linux-gnu target configured with --enable-sjlj-exceptions and look its output. -- aa.cc -- void foo (int); void bar (int *) throw (int); int a; void f (int max_stack) { int aa[max_stack]; int *sp = aa; try { bar (aa); return; } catch (int e) { foo (e); a = *sp; } } >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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