Question

我正在使用guile开发应用程序，但出现一些奇怪的错误。我怀疑错误是由guile或它使用的某些库中的未初始化变量引起的。 guile版本2.0和2.2都会出现此问题。

当我与valgrind进行规矩时，出现以下错误（以及其他错误）：

==9945== Conditional jump or move depends on uninitialised value(s)
==9945==    at 0x4D5005B: GC_push_all_eager (mark.c:1583)
==9945==    by 0x4D514C4: GC_push_current_stack (mark_rts.c:695)
==9945==    by 0x4D4B254: GC_with_callee_saves_pushed (mach_dep.c:322)
==9945==    by 0x4D51535: GC_push_regs_and_stack (mark_rts.c:772)
==9945==    by 0x4D5163E: GC_push_roots (mark_rts.c:845)
==9945==    by 0x4D4D8F5: GC_mark_some (mark.c:351)
==9945==    by 0x4D42CBA: GC_stopped_mark (alloc.c:702)
==9945==    by 0x4D4283C: GC_try_to_collect_inner (alloc.c:488)
==9945==    by 0x4D527B1: GC_init (misc.c:1292)
==9945==    by 0x48BBC22: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==    by 0x48C46EE: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==    by 0x491826D: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==  Uninitialised value was created by a stack allocation
==9945==    at 0x4D4B182: GC_with_callee_saves_pushed (mach_dep.c:227)
==9945== 
==9945== Conditional jump or move depends on uninitialised value(s)
==9945==    at 0x4D50063: GC_push_all_eager (mark.c:1583)
==9945==    by 0x4D514C4: GC_push_current_stack (mark_rts.c:695)
==9945==    by 0x4D4B254: GC_with_callee_saves_pushed (mach_dep.c:322)
==9945==    by 0x4D51535: GC_push_regs_and_stack (mark_rts.c:772)
==9945==    by 0x4D5163E: GC_push_roots (mark_rts.c:845)
==9945==    by 0x4D4D8F5: GC_mark_some (mark.c:351)
==9945==    by 0x4D42CBA: GC_stopped_mark (alloc.c:702)
==9945==    by 0x4D4283C: GC_try_to_collect_inner (alloc.c:488)
==9945==    by 0x4D527B1: GC_init (misc.c:1292)
==9945==    by 0x48BBC22: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==    by 0x48C46EE: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==    by 0x491826D: ??? (in /usr/lib/x86_64-linux-gnu/libguile-2.2.so.1.3.1)
==9945==  Uninitialised value was created by a stack allocation
==9945==    at 0x4D4B182: GC_with_callee_saves_pushed (mach_dep.c:227)
==9945==

我在函数中找不到任何未初始化的值 GC_with_callee_saves_pushed。我试图将上下文变量设置为 GC_with_callee_saves_pushed为0，但没有帮助。跟踪中GC_with_callee_saved_pushed的第二个参数来自alloc.c第702行中对GC_approx_sp的函数调用。

在GC_with_callee_saves_pushed中编译的条件分支是“ #if defined（UNIX_LIKE）...”之后的分支。未编译“ #if defined（HAVE_BUILTIN_UNWIND_INIT）”的else分支。

该错误类似于 this

您有什么想法要继续前进吗？

Valgrind报告libgc错误

0 个答案: