Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commit2b0f8ae

Browse files
committed
Fix pg_dump crashes caused by bogus use of va_start/va_end (only seen
on some platforms, which is not too surprising considering how platformspecific these macros must be).
1 parentb25e60d commit2b0f8ae

File tree

2 files changed

+20
-22
lines changed

2 files changed

+20
-22
lines changed

‎src/bin/pg_dump/pg_backup_archiver.c‎

Lines changed: 15 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -872,21 +872,21 @@ int archprintf(Archive* AH, const char *fmt, ...)
872872
intbSize=strlen(fmt)+256;
873873
intcnt=-1;
874874

875-
va_start(ap,fmt);
876-
877875
/* This is paranoid: deal with the possibility that vsnprintf is willing to ignore trailing null */
878876
/* or returns > 0 even if string does not fit. It may be the case that it returns cnt = bufsize */
879-
while (cnt<0||cnt >= (bSize-1) ) {
880-
if (p!=NULL)free(p);
881-
bSize *=2;
882-
if ((p=malloc(bSize))==NULL)
877+
while (cnt<0||cnt >= (bSize-1) )
883878
{
884-
va_end(ap);
885-
exit_horribly(AH,"%s: could not allocate buffer for archprintf\n",progname);
886-
}
887-
cnt=vsnprintf(p,bSize,fmt,ap);
879+
if (p!=NULL)free(p);
880+
bSize *=2;
881+
p= (char*)malloc(bSize);
882+
if (p==NULL)
883+
{
884+
exit_horribly(AH,"%s: could not allocate buffer for archprintf\n",progname);
885+
}
886+
va_start(ap,fmt);
887+
cnt=vsnprintf(p,bSize,fmt,ap);
888+
va_end(ap);
888889
}
889-
va_end(ap);
890890
WriteData(AH,p,cnt);
891891
free(p);
892892
returncnt;
@@ -977,21 +977,21 @@ int ahprintf(ArchiveHandle* AH, const char *fmt, ...)
977977
intbSize=strlen(fmt)+256;/* Should be enough */
978978
intcnt=-1;
979979

980-
va_start(ap,fmt);
981980
/* This is paranoid: deal with the possibility that vsnprintf is willing to ignore trailing null */
982981
/* or returns > 0 even if string does not fit. It may be the case that it returns cnt = bufsize */
983-
while (cnt<0||cnt >= (bSize-1) ) {
982+
while (cnt<0||cnt >= (bSize-1) )
983+
{
984984
if (p!=NULL)free(p);
985985
bSize *=2;
986986
p= (char*)malloc(bSize);
987987
if (p==NULL)
988988
{
989-
va_end(ap);
990989
die_horribly(AH,"%s: could not allocate buffer for ahprintf\n",progname);
991990
}
991+
va_start(ap,fmt);
992992
cnt=vsnprintf(p,bSize,fmt,ap);
993+
va_end(ap);
993994
}
994-
va_end(ap);
995995
ahwrite(p,1,cnt,AH);
996996
free(p);
997997
returncnt;

‎src/bin/pg_dump/pg_backup_tar.c‎

Lines changed: 5 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -899,24 +899,22 @@ static int tarPrintf(ArchiveHandle *AH, TAR_MEMBER *th, const char *fmt, ...)
899899
intbSize=strlen(fmt)+256;/* Should be enough */
900900
intcnt=-1;
901901

902-
va_start(ap,fmt);
903902
/* This is paranoid: deal with the possibility that vsnprintf is willing to ignore trailing null */
904903
/* or returns > 0 even if string does not fit. It may be the case that it returns cnt = bufsize */
905-
while (cnt<0||cnt >= (bSize-1) ) {
904+
while (cnt<0||cnt >= (bSize-1) )
905+
{
906906
if (p!=NULL)free(p);
907907
bSize *=2;
908908
p= (char*)malloc(bSize);
909909
if (p==NULL)
910910
{
911-
va_end(ap);
912-
die_horribly(AH,"%s: could not allocate buffer for ahprintf\n",progname);
911+
die_horribly(AH,"%s: could not allocate buffer for tarPrintf\n",progname);
913912
}
913+
va_start(ap,fmt);
914914
cnt=vsnprintf(p,bSize,fmt,ap);
915+
va_end(ap);
915916
}
916-
va_end(ap);
917-
918917
cnt=tarWrite(p,cnt,th);
919-
920918
free(p);
921919
returncnt;
922920
}

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp