g++ 1.32 fails to give warning for erroneous assignments

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1 total messages Started by "Douglas C. Schmidt" Sun, 01 Jan 1989 21:13

#1586

Author: "Douglas C. Schmidt"
Date: Sun, 01 Jan 1989 21:13

38 lines
1794 bytes

Hi,

   The following demonstrates two problems with g++ 1.32:
   
----------------------------------------   
main ( int, char *[ ] ) {
   unsigned int i = -1000; // should give a warning
   char a = 103203.9e1;    // generates illegal asm output
}
----------------------------------------

AT&T cfront 1.2.1 gives the following error diagnostics for this:

----------------------------------------
CC  test.C:
"test.C", line 4: warning: negative initializer for unsigned i
"test.C", line 4: warning:  double  assigned to char 
----------------------------------------

However, g++ 1.32 gives no compiler diagnostics, but generates erroneous
assembly code:

----------------------------------------
g++ version 1.32.0
 /usr/public/lib/g++/gcc-cpp -+ -v -I/cd/ua/schmidt/include/ -undef
-D__GNU__ -D__GNUG__ -Dsparc -Dsun -Dunix test.C /tmp/cca06645.cpp
GNU CPP version 1.32
 /usr/public/lib/g++/gcc-c++ /tmp/cca06645.cpp -quiet -dumpbase test.C
-fstrength-reduce -finline-functions -fmemoize-lookups -fsave-memoized
-fchar-charconst -noreg -version -o /tmp/cca06645.s
GNU C++ version 1.32.0 (sparc) compiled by GNU C version 1.31.
 as /tmp/cca06645.s -o test.o
as: "/tmp/cca06645.s", line 14: error: constant value must be between
-4096 and 4095
----------------------------------------

Doug

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