On Mon, Oct 27, 2008 at 06:35:34AM +0000, Martin Kersten wrote:
Update of /cvsroot/monetdb/MonetDB5/src/modules/mal In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv4663
Modified Files: bbp.mx Log Message: Silence compilers
U bbp.mx Index: bbp.mx =================================================================== RCS file: /cvsroot/monetdb/MonetDB5/src/modules/mal/bbp.mx,v retrieving revision 1.127 retrieving revision 1.128 diff -u -d -r1.127 -r1.128 --- bbp.mx 25 Oct 2008 22:08:09 -0000 1.127 +++ bbp.mx 27 Oct 2008 06:35:32 -0000 1.128 @@ -867,7 +867,7 @@ int i; char buf[MAXPATHLEN]; char cwd[MAXPATHLEN];
- getcwd(cwd, MAXPATHLEN);
- (void) getcwd(cwd, MAXPATHLEN);
This is not "sufficient". With optimization enabled, gcc still (correctly) complains as follows: ======== gcc -DHAVE_CONFIG_H -I. -I../../.. -I/ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal -I/ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal -I../atoms -I/ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal/../atoms -I../kernel -I/ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal/../kernel -I../../mal -I/ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal/../../mal -I/ufs/manegold/_/scratch0/Monet/Testing/Current/prefix.--enable-strict_--disable-optimize_--disable-debug_--disable-assert/include/MonetDB -I/ufs/manegold/_/scratch0/Monet/Testing/Current/prefix.--enable-strict_--disable-optimize_--disable-debug_--disable-assert/include/MonetDB/mapilib -I/ufs/manegold/_/scratch0/Monet/Testing/Current/prefix.--enable-strict_--disable-optimize_--disable-debug_--disable-assert/include/MonetDB -I/ufs/manegold/_/scratch0/Monet/Testing/Current/prefix.--enable-strict_--disable-optimize_--disable-debug_--disable-assert/include/MonetDB/common -I/ufs/manegold/_/scratch0/Monet/Testing/Current/prefix.--enable-strict_--disable-optimize_--disable-debug_--disable-assert/include/MonetDB/gdk -I/usr/include/libxml2 -DLIBBBP -O2 -Wall -Wextra -std=c99 -Werror-implicit-function-declaration -Werror -Wpointer-arith -Wdeclaration-after-statement -Wundef -Wp,-D_FORTIFY_SOURCE=2 -D_REENTRANT -c bbp.c -fPIC -DPIC -o .libs/lib_bbp_la-bbp.o cc1: warnings being treated as errors /ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal/bbp.mx: In function 'CMDbbpLocation': /ufs/manegold/_/scratch0/Monet/Testing/Current/source/MonetDB5/src/modules/mal/bbp.mx:874: warning: ignoring return value of 'getcwd', declared with attribute warn_unused_result make[8]: *** [lib_bbp_la-bbp.lo] Error 1 ========
getcwd() can fail (e.g., incase the current directpry is not readable for the user; see `man getcwd` for details), and hence, the return value needs to be checked, and proper measures need to be taken in case getcwd() does fail (e.g., have default fall-back or trigger warning or error).
Stefan
b = BATnew(TYPE_int, TYPE_str, BBPsize); if (b == 0)
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