0
：エラーメッセージ：*** glibcの検出*** ./cube：（！前）ダブル無料または破損：私はエラーを取得しています次のコードで0x0a4c4420 ***
333 glGenBuffers(surftotal, uiVBO);
334 {
335 for(surfnum=0; surfnum<surftotal; ++surfnum)
336 {
337 glBindBuffer(GL_ARRAY_BUFFER, uiVBO[surfnum]);
338 size_t buf_size = 9*sizeof(GLfloat)*triNum[surfnum];
339 GLfloat* const pData = (GLfloat*)malloc(buf_size);
340 for(i=0; i<triNum[surfnum]; ++i)
341 printf("%d...",triNum[surfnum]);
342 {
343 memcpy(pData+i*9, triArray[surfnum][i].pt1, 3*sizeof(GLfloat));
344 memcpy(pData+i*9+3, triArray[surfnum][i].pt2, 3*sizeof(GLfloat));
345 memcpy(pData+i*9+6, triArray[surfnum][i].pt3, 3*sizeof(GLfloat));
346 }
347 glBufferData(GL_ARRAY_BUFFER, buf_size, pData, GL_STATIC_DRAW);
348 free(pData);
349 }
350 glBindBuffer(GL_ARRAY_BUFFER, 0);
351 glEnableVertexAttribArray(VERTEX_ARRAY);
352 for(surfnum=0; surfnum<surftotal; ++surfnum)
353 {
354 glBindBuffer(GL_ARRAY_BUFFER, uiVBO[surfnum]);
355 glVertexAttribPointer(VERTEX_ARRAY, 3, GL_FLOAT, GL_FALSE, 0, 0);
356 glDrawArrays(GL_TRIANGLES, 0, 3*triNum[surfnum]);
357 if (!TestEGLError("glDrawArrays"))
358 {
359 goto cleanup;
360 }
361 }
362 glBindBuffer(GL_ARRAY_BUFFER, 0);
363 eglSwapBuffers(eglDisplay, eglSurface);
364
365 if (!TestEGLError("eglSwapBuffers"))
366 {
367 goto cleanup;
368 }
369
370 int i32NumMessages = XPending(x11Display);
371 for(int i = 0; i < i32NumMessages; i++)
372 {
373 XEvent event;
374 XNextEvent(x11Display, &event);
375 }
376 }
377 glDeleteBuffers(surftotal,uiVBO);
そして、エラーは以下の通りです：
* glibc detected ./cube: free(): invalid pointer: 0x090c53a0 **
printfは、エラーを取得している、そしてそれは7 7 7 7 7 7 7 1 abortedし、このエラーを書き込みます。
印刷しようとするとこのエラーが発生します。私はvalgrindを使用しようと、その出力は次のようになります。
==8922== Memcheck, a memory error detector
==8922== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==8922== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info
==8922== Command: ./cube
==8922==
libEGL warning: use software fallback
==8922== Invalid write of size 1
==8922== at 0x4027418: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A48F: main (Hello.cpp:343)
==8922== Address 0x9391567 is 11 bytes after a block of size 252 alloc'd
==8922== at 0x4025BD3: malloc (vg_replace_malloc.c:236)
==8922== by 0x804A3EC: main (Hello.cpp:339)
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027420: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A48F: main (Hello.cpp:343)
==8922== Address 0x9391566 is 10 bytes after a block of size 252 alloc'd
==8922== at 0x4025BD3: malloc (vg_replace_malloc.c:236)
==8922== by 0x804A3EC: main (Hello.cpp:339)
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027429: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A48F: main (Hello.cpp:343)
==8922== Address 0x9391565 is 9 bytes after a block of size 252 alloc'd
==8922== at 0x4025BD3: malloc (vg_replace_malloc.c:236)
==8922== by 0x804A3EC: main (Hello.cpp:339)
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027432: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A48F: main (Hello.cpp:343)
==8922== Address 0x9391564 is 8 bytes after a block of size 252 alloc'd
==8922== at 0x4025BD3: malloc (vg_replace_malloc.c:236)
==8922== by 0x804A3EC: main (Hello.cpp:339)
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027418: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A4E3: main (Hello.cpp:344)
==8922== Address 0x9391573 is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027420: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A4E3: main (Hello.cpp:344)
==8922== Address 0x9391572 is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027429: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A4E3: main (Hello.cpp:344)
==8922== Address 0x9391571 is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027432: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A4E3: main (Hello.cpp:344)
==8922== Address 0x9391570 is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027418: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A539: main (Hello.cpp:345)
==8922== Address 0x939157f is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027420: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A539: main (Hello.cpp:345)
==8922== Address 0x939157e is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027429: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A539: main (Hello.cpp:345)
==8922== Address 0x939157d is not stack'd, malloc'd or (recently) free'd
==8922==
==8922== Invalid write of size 1
==8922== at 0x4027432: memcpy (mc_replace_strmem.c:497)
==8922== by 0x804A539: main (Hello.cpp:345)
==8922== Address 0x939157c is not stack'd, malloc'd or (recently) free'd
==8922==
--8922-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - exiting
--8922-- si_code=1; Faulting address: 0xC8B91574; sp: 0x62a5ce00
valgrind: the 'impossible' happened:
Killed by fatal signal
==8922== at 0x38031511: unlinkBlock (m_mallocfree.c:245)
sched status:
running_tid=1
Thread 1: status = VgTs_Runnable
==8922== at 0x4024F12: calloc (vg_replace_malloc.c:467)
==8922== by 0x48D068A: softpipe_resource_create (sp_texture.c:114)
==8922== by 0x4A50D96: st_bufferobj_data (u_inlines.h:180)
==8922== by 0x4A1BB4E: _mesa_BufferDataARB (bufferobj.c:1177)
==8922== by 0x49BFFD7: _es_BufferData (api_exec_es2.c:391)
==8922== by 0x804A561: main (Hello.cpp:347)
しかし、私はそれを理解することができませんでした。エラーがどこにあるのか教えていただけますか？私は
export MALLOC_CHECK_=0
を使用している場合 これは、セグメンテーションフォールトを与えます。
（私は質問を編集した）
行番号の情報が失われているようですが、完全なデバッグで再構築してみてください。 –
このvalgrindコマンドの "valgrind --leak-check = yes ./cube"が貼り付けられていることはどういう意味ですか？ –
@surbhi：Frankはあなたのコンパイラ（GCC？ ） 'cube'実行可能ファイルにデバッグ情報が埋め込まれるようにコンパイルとリンクを行います。 Valgrindは、あなたのコードのどの行にエラーが発生しているかを出力します（ 'memcpy'と' malloc'で既にそうであるように）。 – DarkDust